Saaristoa abnormis
- Group
- Spiders
- Peak month
- June
- Records since 2000
- 125
Sabatieria ornata
- Group
- Roundworms
- Peak month
- May
- Records since 2000
- 110
Sabatieria punctata
- Group
- Roundworms
- Peak month
- May
- Records since 2000
- 119
Sabella discifera
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 151
Sabellides octocirrata
- Group
- Worms (annelids)
- Peak month
- March
- Records since 2000
- 282
Sabine's Gull
- Group
- Birds
- Peak month
- September
- Records since 2000
- 2,159
Saccobasis polita
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 55
Saccocirrus papillocercus
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 70
Sacculina carcini
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 68
Saddleback Harvestman
- Group
- Mites, harvestmen and other arachnids
- Peak month
- July
- Records since 2000
- 1,164
Safflower
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 95
Saffron Bolete
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 65
Saffron Milkcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 520
Saffrondrop Bonnet
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 544
Sagartia lacerata
- Group
- Jellyfish, corals and anemones
- Peak month
- September
- Records since 2000
- 212
Sagartia undata
- Group
- Jellyfish, corals and anemones
- Peak month
- January
- Records since 2000
- 277
Sage Leafhopper
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 454
Saigusaia flaviventris
- Group
- True flies
- Peak month
- May
- Records since 2000
- 66
Sainfoin
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,094
Saithe, Pollock
- Group
- Fish
- Peak month
- August
- Records since 2000
- 23,988
Saitozyma podzolica
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 730
Salda littoralis
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 91
Saldula c-album
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 81
Saldula opacula
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 87
Saldula pallipes
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 87
Saldula palustris
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 67
Salicarus roseri
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 75
Salicornia perennis
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 167
Salix holosericea
- Group
- Flowering plants
- Records since 2000
- 85
- Counties with records
- 2
Salix reichardtii
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 54
Salix sepulcralis
- Group
- Flowering plants
- Records since 2000
- 57
- Counties with records
- 7
Sallow [moth]
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 1,132
Sallow Kitten
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 928
Salmon Salad
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 51
Salmonberry
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 948
Salmonella enterica
- Group
- Microorganisms and protists
- Peak month
- December
- Records since 2000
- 3,388
Salpingus planirostris
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 1,008
Salpingus ruficollis
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 288
Salsify
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 1,134
Salt and Pepper Microcaddis
- Group
- Caddisflies
- Peak month
- July
- Records since 2000
- 957
Saltbush
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 59
Salted Shield Lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 6,211
Saltella sphondylii
- Group
- True flies
- Peak month
- July
- Records since 2000
- 344
Salticus cingulatus
- Group
- Spiders
- Peak month
- May
- Records since 2000
- 72
Saltmarsh Flat-sedge
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 83
Saltmarsh Goosefoot
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 92
Saltmarsh Short-spur
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 94
Salvatoria clavata
- Group
- Worms (annelids)
- Peak month
- May
- Records since 2000
- 97
Salvatoria swedmarki
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 91
Samytha sexcirrata
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 232
Sand binder
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,069
Sand Burrowing Brittle Star
- Group
- Starfish and sea urchins
- Peak month
- June
- Records since 2000
- 1,808
Sand Cat's-tail
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 273
Sand Catchfly
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 54
Sand digger shrimp
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 5,027
Sand digger shrimp
- Group
- Crustaceans
- Peak month
- May
- Records since 2000
- 1,187
Sand Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 1,528
Sand Gaper, Softshell clam, Long necked clam, Steamer clam
- Group
- Molluscs
- Peak month
- April
- Records since 2000
- 1,391
Sand Goby
- Group
- Fish
- Peak month
- September
- Records since 2000
- 4,325
Sand hopper
- Group
- Crustaceans
- Peak month
- July
- Records since 2000
- 222
Sand Leek
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 190
Sand lizard
- Group
- Reptiles
- Peak month
- April
- Records since 2000
- 450
Sand Mason
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 17,483
Sand Pill-millipede
- Group
- Millipedes
- Peak month
- March
- Records since 2000
- 107
Sand Sedge
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,642
Sand smelt
- Group
- Fish
- Peak month
- October
- Records since 2000
- 824
Sand sole
- Group
- Fish
- Peak month
- September
- Records since 2000
- 1,939
Sand Spurrey
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 560
Sand Star
- Group
- Starfish and sea urchins
- Peak month
- September
- Records since 2000
- 4,439
Sand Tailed Digger Wasp
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 613
Sandalled Anemone
- Group
- Jellyfish, corals and anemones
- Peak month
- June
- Records since 2000
- 7,366
Sanderling
- Group
- Birds
- Peak month
- September
- Records since 2000
- 56,821
Sandfly
- Group
- Caddisflies
- Peak month
- April
- Records since 2000
- 21,424
Sandhill crane
- Group
- Birds
- Peak month
- October
- Records since 2000
- 96
Sandwich Tern
- Group
- Birds
- Peak month
- August
- Records since 2000
- 88,504
Sandy Carpet
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 730
Sandy ray
- Group
- Fish
- Peak month
- November
- Records since 2000
- 272
Sanicle
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 3,193
Saperda populnea
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 65
Saperda scalaris
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 68
Saprolegnia parasitica
- Group
- Microorganisms and protists
- Peak month
- August
- Records since 2000
- 151
Sapromyza halidayi
- Group
- True flies
- Peak month
- June
- Records since 2000
- 52
Sapromyza hyalinata
- Group
- True flies
- Peak month
- June
- Records since 2000
- 74
Sapromyza opaca
- Group
- True flies
- Peak month
- July
- Records since 2000
- 50
Sapromyza quadricincta
- Group
- True flies
- Peak month
- July
- Records since 2000
- 120
Sapromyza quadripunctata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 543
Sapromyza setiventris
- Group
- True flies
- Peak month
- July
- Records since 2000
- 60
Sapromyza sexpunctata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 222
Sapromyza tuberculosa
- Group
- True flies
- Peak month
- July
- Records since 2000
- 140
Sarcogyne lichen
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 1,095
Sarcophaga anaces
- Group
- True flies
- Peak month
- June
- Records since 2000
- 239
Sarcophaga aratrix
- Group
- True flies
- Peak month
- July
- Records since 2000
- 182
Sarcophaga carnaria
- Group
- True flies
- Peak month
- July
- Records since 2000
- 1,511
Sarcophaga crassimargo
- Group
- True flies
- Peak month
- August
- Records since 2000
- 462
Sarcophaga depressifrons
- Group
- True flies
- Peak month
- June
- Records since 2000
- 127
Sarcophaga dissimilis
- Group
- True flies
- Peak month
- July
- Records since 2000
- 640
Sarcophaga filia
- Group
- True flies
- Peak month
- July
- Records since 2000
- 192
Sarcophaga haemorrhoa
- Group
- True flies
- Peak month
- July
- Records since 2000
- 593
Sarcophaga hirticrus
- Group
- True flies
- Peak month
- July
- Records since 2000
- 61
Sarcophaga incisilobata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 723
Sarcophaga melanura
- Group
- True flies
- Peak month
- August
- Records since 2000
- 268
Sarcophaga nigriventris
- Group
- True flies
- Peak month
- July
- Records since 2000
- 1,253
Sarcophaga pumila
- Group
- True flies
- Peak month
- July
- Records since 2000
- 428
Sarcophaga rosellei
- Group
- True flies
- Peak month
- July
- Records since 2000
- 170
Sarcophaga sinuata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 211
Sarcophaga subulata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 92
Sarcophaga subvicina
- Group
- True flies
- Peak month
- August
- Records since 2000
- 870
Sarcophaga teretirostris
- Group
- True flies
- Peak month
- July
- Records since 2000
- 200
Sarcophaga vagans
- Group
- True flies
- Peak month
- July
- Records since 2000
- 855
Sarcophaga variegata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 1,083
Sarcophila latifrons
- Group
- True flies
- Peak month
- July
- Records since 2000
- 112
Sarcopyrenia gibba
- Group
- Fungi
- Peak month
- June
- Records since 2000
- 227
Sarcosagium campestre
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 50
Sardinian Warbler
- Group
- Birds
- Peak month
- October
- Records since 2000
- 143
Sargus flavipes
- Group
- True flies
- Peak month
- September
- Records since 2000
- 383
Sarsinebalia typhlops
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 582
Sarsinebalia urgorrii
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 57
Sasa palmata
- Group
- Flowering plants
- Peak month
- March
- Records since 2000
- 154
Satellite
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 1,576
Satin beauty
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 270
Satin lutestring
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 159
Satin wave
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 233
Satyr pug
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 380
Saucer Bug
- Group
- True bugs
- Peak month
- September
- Records since 2000
- 3,582
Saucer magnolia
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 207
Sausage Beard-moss
- Group
- Mosses
- Peak month
- November
- Records since 2000
- 92
Savignia frontata
- Group
- Spiders
- Peak month
- September
- Records since 2000
- 304
Saw-wort
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 640
Sawadaea tulasnei
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 205
Sawyer Beetle
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 393
Saxicavella jeffreysi
- Group
- Molluscs
- Peak month
- March
- Records since 2000
- 180
Saxifraga hirsuta
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 57
Saxifraga rosacea
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 63
Saxifraga umbrosa
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 71
Saxifraga urbium
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 56
Saxon Wasp
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 765
Scaldfish
- Group
- Fish
- Peak month
- September
- Records since 2000
- 22,509
Scale-eating ladybird beetle
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 1,033
Scalibregma celticum
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 4,353
Scalibregma inflatum
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 13,869
Scalibregma stenocerum
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 628
Scalloped Hazel
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 2,363
Scalloped Hook-tip
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 861
Scalloped Oak
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 4,290
Scalpellum scalpellum
- Group
- Crustaceans
- Peak month
- May
- Records since 2000
- 308
Scaly Cricket
- Group
- Grasshoppers and crickets
- Peak month
- October
- Records since 2000
- 97
Scaly Dog-lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 1,668
Scaly Earthball
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 1,046
Scaly Stalkball
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 73
Scaly Tooth
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 643
Scambus brevicornis
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 73
Scapania aequiloba
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 276
Scapania cuspiduligera
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 116
Scapania degenii
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 81
Scapania nimbosa
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 112
Scapania ornithopoides
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 222
Scapania subalpina
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 289
Scapania uliginosa
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 225
Scaphidium quadrimaculatum
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 199
Scaphisoma agaricinum
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 65
Scaptomyza flava
- Group
- True flies
- Peak month
- July
- Records since 2000
- 306
Scaptomyza graminum
- Group
- True flies
- Peak month
- May
- Records since 2000
- 155
Scarab Shieldbug
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 213
Scarce Blue-tailed Damselfly
- Group
- Dragonflies and damselflies
- Peak month
- June
- Records since 2000
- 5,148
Scarce Chaser
- Group
- Dragonflies and damselflies
- Peak month
- June
- Records since 2000
- 10,319
Scarce Emerald Damselfly
- Group
- Dragonflies and damselflies
- Peak month
- July
- Records since 2000
- 1,585
Scarce Footman
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 4,122
Scarce Four-dot Pin-palp
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 128
Scarce Hook-Tip
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 52
Scarce Notchwort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 485
Scarce Prominent
- Group
- Butterflies and moths
- Peak month
- April
- Records since 2000
- 102
Scarce Redshank
- Group
- Mosses
- Peak month
- May
- Records since 2000
- 64
Scarce Seven-Spot Ladybird
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 243
Scarce Small Yellow Sally
- Group
- Stoneflies
- Peak month
- April
- Records since 2000
- 1,468
Scarce Tortoise Shieldbug
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 137
Scarce turf-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 111
Scarce Umber
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 1,101
Scarlet Caterpillarclub
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 943
Scarlet Elf Cup
- Group
- Fungi
- Peak month
- February
- Records since 2000
- 158
Scarlet Elfcup
- Group
- Fungi
- Peak month
- March
- Records since 2000
- 1,186
Scarlet Ibis
- Group
- Birds
- Peak month
- September
- Records since 2000
- 81
Scarlet Pimpernel
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 6,084
Scarlet Sea Anemone
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 100
Scarlet Tiger
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 2,430
Scarlet Waxcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 4,247
Scarletina Bolete
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 724
Scarodytes halensis
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 78
Scatella paludum
- Group
- True flies
- Peak month
- June
- Records since 2000
- 209
Scatella subguttata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 87
Scatella tenuicosta
- Group
- True flies
- Peak month
- June
- Records since 2000
- 462
Scathophaga calida
- Group
- True flies
- Peak month
- March
- Records since 2000
- 137
Scathophaga inquinata
- Group
- True flies
- Peak month
- May
- Records since 2000
- 631
Scathophaga litorea
- Group
- True flies
- Peak month
- August
- Records since 2000
- 523
Scathophaga lutaria
- Group
- True flies
- Peak month
- April
- Records since 2000
- 72
Scathophaga spurca
- Group
- True flies
- Peak month
- October
- Records since 2000
- 151
Scatomyza scybalaria
- Group
- True flies
- Peak month
- July
- Records since 2000
- 64
Scatopsciara atomaria
- Group
- True flies
- Peak month
- June
- Records since 2000
- 952
Scatopsciara brevicornis
- Group
- True flies
- Peak month
- March
- Records since 2000
- 55
Scatopsciara calamophila
- Group
- True flies
- Peak month
- August
- Records since 2000
- 64
Scatopsciara multispina
- Group
- True flies
- Peak month
- August
- Records since 2000
- 58
Scatopsciara neglecta
- Group
- True flies
- Peak month
- June
- Records since 2000
- 54
Scatopsciara vitripennis
- Group
- True flies
- Peak month
- February
- Records since 2000
- 70
Scatopse notata
- Group
- True flies
- Peak month
- April
- Records since 2000
- 116
Scelio rugosulus
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 60
Scellus notatus
- Group
- True flies
- Peak month
- June
- Records since 2000
- 64
Scented Mayweed
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 2,496
Scentless bug
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 6,364
Scentless Mayweed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 4,357
Schaerer's disc lichen
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 113
Schaereria lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 274
Schaereria lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 130
Schendyla nemorensis
- Group
- Centipedes
- Peak month
- April
- Records since 2000
- 62
Schilling's rhopalid
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 659
Schismatomma graphidioides
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 478
Schistidium elegantulum
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 208
Schistidium papillosum
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 62
Schistidium pruinosum
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 139
Schistidium robustum
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 115
Schistochilopsis opacifolia
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 163
Schistomeringos neglecta
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 1,118
Schistomeringos rudolphi
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 1,758
Schistomysis kervillei
- Group
- Crustaceans
- Peak month
- July
- Records since 2000
- 113
Schizaphis graminum
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 141
Schizaphis rufula
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 60
Schizohelea leucopeza
- Group
- True flies
- Peak month
- July
- Records since 2000
- 69
Schizomavella auriculata
- Group
- Bryozoans
- Peak month
- June
- Records since 2000
- 1,910
Schizomavella cornuta
- Group
- Bryozoans
- Peak month
- September
- Records since 2000
- 62
Schizomavella linearis
- Group
- Bryozoans
- Peak month
- August
- Records since 2000
- 1,685
Schizomavella teresae
- Group
- Bryozoans
- Peak month
- June
- Records since 2000
- 166
Schizophyllum amplum
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 107
Schizoporella hesperia
- Group
- Bryozoans
- Peak month
- August
- Records since 2000
- 322
Schizoporella japonica
- Group
- Bryozoans
- Peak month
- June
- Records since 2000
- 90
Schizoporella unicornis
- Group
- Bryozoans
- Peak month
- September
- Records since 2000
- 88
Schizopyga circulator
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 91
Schizopyga podagrica
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 60
Schizotheca fissa
- Group
- Bryozoans
- Peak month
- August
- Records since 2000
- 388
Schizothecium vesticola
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 87
Schizotrema quercicola
- Group
- Lichens
- Peak month
- October
- Records since 2000
- 750
Schizotricha frutescens
- Group
- Jellyfish, corals and anemones
- Peak month
- July
- Records since 2000
- 232
Schljakovia kunzeana
- Group
- Liverworts
- Peak month
- May
- Records since 2000
- 79
Schmidingerella serrata
- Group
- Microorganisms and protists
- Peak month
- July
- Records since 2000
- 160
Schmidtea polychroa
- Group
- Flatworms
- Peak month
- September
- Records since 2000
- 70
Schoenobius gigantella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 235
Schoenomyza litorella
- Group
- True flies
- Peak month
- July
- Records since 2000
- 675
Schottera nicaeensis
- Group
- Seaweeds and algae
- Peak month
- May
- Records since 2000
- 458
Schreber's dicranella moss
- Group
- Mosses
- Peak month
- October
- Records since 2000
- 2,800
Schreckensteinia festaliella
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 76
Schwarz's Campylopus Moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 178
Schwenckfeldina carbonaria
- Group
- True flies
- Peak month
- August
- Records since 2000
- 1,654
Sciaphilus asperatus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 415
Sciapus longulus
- Group
- True flies
- Peak month
- July
- Records since 2000
- 62
Sciapus maritimus
- Group
- True flies
- Peak month
- July
- Records since 2000
- 62
Sciapus platypterus
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,055
Sciapus wiedemanni
- Group
- True flies
- Peak month
- July
- Records since 2000
- 131
Sciara hemerobioides
- Group
- True flies
- Peak month
- July
- Records since 2000
- 1,057
Scilla siberica
- Group
- Flowering plants
- Peak month
- March
- Records since 2000
- 163
Scinaia furcellata
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 247
Sciocoris cursitans
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 250
Sciodrepoides fumatus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 62
Sciodrepoides watsoni
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 285
Sciomyza simplex
- Group
- True flies
- Peak month
- June
- Records since 2000
- 58
Scirtes hemisphaericus
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 604
Sclerocheilus minutus
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 1,912
Sclerococcum parasiticum
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 72
Sclerococcum sphaerale
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 212
Scleroderma bovista
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 216
Sclerophora peronella
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 225
Scolelepis bonnieri
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 925
Scolelepis cantabra
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 67
Scolelepis foliosa
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 387
Scolelepis gilchristi
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 123
Scolelepis korsuni
- Group
- Worms (annelids)
- Peak month
- June
- Records since 2000
- 1,112
Scolelepis squamata
- Group
- Worms (annelids)
- Peak month
- September
- Records since 2000
- 983
Scolelepis tridentata
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 372
Scoletoma fragilis
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 684
Scoletoma laurentiana
- Group
- Worms (annelids)
- Peak month
- September
- Records since 2000
- 124
Scoletoma magnidentata
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 450
Scoletoma tetraura
- Group
- Worms (annelids)
- Peak month
- June
- Records since 2000
- 54
Scoliciosporum lichen
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 2,097
Scoliciosporum pruinosum
- Group
- Lichens
- Peak month
- February
- Records since 2000
- 82
Scoliocentra villosa
- Group
- True flies
- Peak month
- March
- Records since 2000
- 76
Scolioneura betuleti
- Group
- Bees, wasps and ants
- Peak month
- October
- Records since 2000
- 168
Scolopostethus affinis
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 530
Scolopostethus decoratus
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 451
Scolopostethus grandis
- Group
- True bugs
- Peak month
- April
- Records since 2000
- 77
Scolopostethus puberulus
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 98
Scolopostethus thomsoni
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 790
Scolytus intricatus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 289
Scolytus rugulosus
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 78
Scoparia ancipitella
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 77
Scoparia basistrigalis
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 331
Scoparia cembrella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 246
Scoparia pyralella
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 152
Scopelocheirus hopei
- Group
- Crustaceans
- Peak month
- June
- Records since 2000
- 181
Scops Owl
- Group
- Birds
- Peak month
- December
- Records since 2000
- 215
Scopula emutaria
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 50
Scopuloides hydnoides
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 128
Scopuloides rimosa
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 295
Scorched Alpine-sedge
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 126
Scorched Carpet
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 966
Scorched Wing
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 1,807
Scorpion Spider Crab
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 1,747
Scotch Argus
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 11,982
Scotch Rose
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 2,211
Scotina gracilipes
- Group
- Spiders
- Peak month
- September
- Records since 2000
- 58
Scotophaeus blackwalli
- Group
- Spiders
- Peak month
- August
- Records since 2000
- 202
Scots Lovage
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 187
Scots Pine
- Group
- Conifers
- Peak month
- August
- Records since 2000
- 7,517
Scottish Asphodel
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 221
Scottish Beard-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 102
Scottish Crossbill
- Group
- Birds
- Peak month
- February
- Records since 2000
- 664
Scottish Eyebright
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 54
Scottish Primrose
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 56
Scottish wood ant
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 441
Scrambled egg slime, Flowers of tan, Dog vomit slime mold
- Group
- Microorganisms and protists
- Peak month
- August
- Records since 2000
- 1,175
Screech Beetle
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 635
Scribble lichen
- Group
- Lichens
- Peak month
- April
- Records since 2000
- 563
Scribble lichen
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 403
Scribble lichen
- Group
- Lichens
- Peak month
- November
- Records since 2000
- 223
Scrobipalpa acuminatella
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 204
Scrobipalpa costella
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 381
Scrobipalpa ocellatella
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 249
Scrophularia vernalis
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 136
Scrubland Pigmy
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 713
Scruparia ambigua
- Group
- Bryozoans
- Peak month
- July
- Records since 2000
- 443
Scruparia chelata
- Group
- Bryozoans
- Peak month
- September
- Records since 2000
- 150
Scrupocellaria
- Group
- Bryozoans
- Peak month
- July
- Records since 2000
- 2,676
Scrupocellaria scrupea
- Group
- Bryozoans
- Peak month
- April
- Records since 2000
- 335
Scurfy Twiglet
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,907
Scutellinia crinita
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 50
Scutellinia subhirtella
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 80
Scutellinia trechispora
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 80
Scutellinia umbrorum
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 67
Scutopus ventrolineatus
- Group
- Molluscs
- Peak month
- January
- Records since 2000
- 137
Scybalicus oblongiusculus
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 63
Scydmaenus tarsatus
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 66
Scymnus auritus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 449
Scymnus femoralis
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 60
Scymnus frontalis
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 427
Scymnus haemorrhoidalis
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 448
Scymnus schmidti
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 75
Scythioria phlogina
- Group
- Lichens
- Peak month
- February
- Records since 2000
- 129
Scytinium palmatum
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 110
Scytinium plicatile
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 229
Scytinium pulvinatum
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 138
Scytinium schraderi
- Group
- Lichens
- Peak month
- November
- Records since 2000
- 173
Scytinium subtile
- Group
- Lichens
- Peak month
- November
- Records since 2000
- 70
Scytinium turgidum
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 198
Scytodes thoracica
- Group
- Spiders
- Peak month
- September
- Records since 2000
- 103
Sea anemone
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 72
Sea Arrowgrass
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 2,248
Sea Aster
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 4,057
Sea Barley
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 128
Sea Beard
- Group
- Jellyfish, corals and anemones
- Peak month
- June
- Records since 2000
- 14,037
Sea Beech
- Group
- Seaweeds and algae
- Peak month
- June
- Records since 2000
- 5,987
Sea Bryum
- Group
- Mosses
- Peak month
- September
- Records since 2000
- 832
Sea campion
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 3,472
Sea Cauliflower
- Group
- Seaweeds and algae
- Peak month
- June
- Records since 2000
- 607
Sea chervil
- Group
- Bryozoans
- Peak month
- June
- Records since 2000
- 14,544
Sea Clover
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 105
Sea Club-rush
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 1,227
Sea Comb
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 4,418
Sea Fern-grass
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 250
Sea Fir
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 3,545
Sea Gherkin
- Group
- Starfish and sea urchins
- Peak month
- May
- Records since 2000
- 1,512
Sea Gooseberry
- Group
- Other invertebrates
- Peak month
- June
- Records since 2000
- 5,049
Sea Grapes, Molgula, Sea squirts
- Group
- Sea squirts
- Peak month
- September
- Records since 2000
- 636
Sea Hair
- Group
- Seaweeds and algae
- Peak month
- July
- Records since 2000
- 817
Sea Hare
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 1,419
Sea Holly
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 2,310
Sea Ivory
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 1,321
Sea knotgrass
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 52
Sea Lace
- Group
- Seaweeds and algae
- Peak month
- January
- Records since 2000
- 4,500
Sea Lamprey
- Group
- Fish
- Peak month
- October
- Records since 2000
- 1,394
Sea lemon
- Group
- Sponges
- Peak month
- May
- Records since 2000
- 2,204
Sea Lemon
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 2,152
Sea Lettuce
- Group
- Seaweeds and algae
- Peak month
- January
- Records since 2000
- 5,372
Sea Lettuce
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 1,776
Sea Mare's-tail
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 681
Sea Mayweed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,577
Sea Mouse
- Group
- Worms (annelids)
- Peak month
- September
- Records since 2000
- 4,247
Sea Mouse-ear
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 396
Sea Oak
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 3,085
Sea Oak
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 1,927
Sea Oak
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 1,460
Sea Pea
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 211
Sea Pearlwort
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 135
Sea Plantain
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 4,391
Sea Potato
- Group
- Starfish and sea urchins
- Peak month
- June
- Records since 2000
- 3,598
Sea Purslane
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 1,735
Sea Rocket
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 1,596
Sea Rush
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 876
Sea Sandwort
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,645
Sea Scalewort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 1,079
Sea slug
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 82
Sea sparkle
- Group
- Microorganisms and protists
- Peak month
- July
- Records since 2000
- 819
Sea spider
- Group
- Other invertebrates
- Peak month
- July
- Records since 2000
- 3,655
Sea Spleenwort
- Group
- Ferns and horsetails
- Peak month
- August
- Records since 2000
- 353
Sea Spurge
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,096
Sea squirt
- Group
- Sea squirts
- Peak month
- August
- Records since 2000
- 100
Sea stickleback, Fifteen-spined Stickleback
- Group
- Fish
- Peak month
- September
- Records since 2000
- 790
Sea Stock
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 89
Sea Stork's-bill
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 103
Sea Storm Lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 625
Sea Strawberry
- Group
- Sea squirts
- Peak month
- September
- Records since 2000
- 518
Sea Thread Hydroid
- Group
- Jellyfish, corals and anemones
- Peak month
- July
- Records since 2000
- 824
Sea trout, Brown trout
- Group
- Fish
- Peak month
- August
- Records since 2000
- 27,416
Sea Wormwood
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 411
Sea-fan anemone
- Group
- Jellyfish, corals and anemones
- Peak month
- July
- Records since 2000
- 239
Sea-heath
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 210
Sea-kale
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 3,139
Sea-mat
- Group
- Bryozoans
- Peak month
- September
- Records since 2000
- 5,479
Sea-milkwort
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 2,432
Sea-spider
- Group
- Other invertebrates
- Peak month
- June
- Records since 2000
- 141
Sea-Wormwood Weevil
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 79
Seabuckthorn
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 2,425
Sealoch anemone
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 1,386
Seashore springtail
- Group
- Springtails
- Peak month
- September
- Records since 2000
- 530
Seaside Centaury
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 129
Seaside Daisy
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 2,353
Seaside Grimmia
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 1,537
Seaweed lichen
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 257
Sebacina epigaea
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 74
Sebacina incrustans
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 86
Sedge Warbler
- Group
- Birds
- Peak month
- May
- Records since 2000
- 139,834
Seed-feeding Weevil
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 123
Seedcorn Maggot
- Group
- True flies
- Peak month
- July
- Records since 2000
- 6,186
Segestria byssophila
- Group
- Lichens
- Peak month
- February
- Records since 2000
- 133
Segestria florentina
- Group
- Spiders
- Peak month
- July
- Records since 2000
- 197
Segestria leptalea
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 241
Segestria senoculata
- Group
- Spiders
- Peak month
- June
- Records since 2000
- 188
Segetibacter koreensis
- Group
- Microorganisms and protists
- Peak month
- January
- Records since 2000
- 70
Sei Whale
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 90
Seine riverbank ground beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 2,082
Seioptera vibrans
- Group
- True flies
- Peak month
- June
- Records since 2000
- 243
Seladerma diffine
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 75
Selatosomus aeneus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 166
Selfheal
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 28,118
Seliger's herzogiella moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 226
Seligeria donniana
- Group
- Mosses
- Peak month
- May
- Records since 2000
- 138
Selland's Dandelion
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 61
Sellaphora nigri
- Group
- Seaweeds and algae
- Peak month
- October
- Records since 2000
- 240
Sellaphora pupula
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 174
Sellaphora saugerresii
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 888
Semaphore Fly
- Group
- True flies
- Peak month
- July
- Records since 2000
- 1,122
Sematophyllum substrumulosum
- Group
- Mosses
- Peak month
- January
- Records since 2000
- 276
Semi-ribbed spire snail
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 1,686
Semipalmated Sandpiper
- Group
- Birds
- Peak month
- August
- Records since 2000
- 660
Sendtner's drepanocladus moss
- Group
- Mosses
- Peak month
- June
- Records since 2000
- 80
Senecio doria
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 267
Senotainia conica
- Group
- True flies
- Peak month
- July
- Records since 2000
- 330
Sensitive fern
- Group
- Ferns and horsetails
- Peak month
- June
- Records since 2000
- 92
Seoda ambigua
- Group
- True flies
- Peak month
- June
- Records since 2000
- 62
Sepedon sphegea
- Group
- True flies
- Peak month
- July
- Records since 2000
- 329
Sepedon spinipes
- Group
- True flies
- Peak month
- July
- Records since 2000
- 277
Sepedophilus marshami
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 156
Sepedophilus nigripennis
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 196
Sepia Bolete
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 405
Sepsis cynipsea
- Group
- True flies
- Peak month
- July
- Records since 2000
- 481
Sepsis flavimanus
- Group
- True flies
- Peak month
- July
- Records since 2000
- 205
Sepsis fulgens
- Group
- True flies
- Peak month
- July
- Records since 2000
- 463
Sepsis neocynipsea
- Group
- True flies
- Peak month
- July
- Records since 2000
- 230
Sepsis orthocnemis
- Group
- True flies
- Peak month
- July
- Records since 2000
- 437
Sepsis punctum
- Group
- True flies
- Peak month
- June
- Records since 2000
- 470
Sepsis thoracica
- Group
- True flies
- Peak month
- July
- Records since 2000
- 93
Sepsis violacea
- Group
- True flies
- Peak month
- June
- Records since 2000
- 110
September Thorn
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 1,761
Septoria cornicola
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 61
Septoria rumicum
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 57
Septoria stachydis
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 50
Seraphim
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 516
Sericoderus brevicornis
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 271
Sericoderus lateralis
- Group
- Beetles
- Peak month
- October
- Records since 2000
- 114
Sericomyia superbiens
- Group
- True flies
- Peak month
- August
- Records since 2000
- 527
Sericus brunneus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 54
Serotine Bat
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 884
Serpent star
- Group
- Starfish and sea urchins
- Peak month
- June
- Records since 2000
- 8,093
Serpentine solenopsora
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 92
Serpula himantioides
- Group
- Fungi
- Peak month
- November
- Records since 2000
- 177
Serrate Ephemerum Moss
- Group
- Mosses
- Peak month
- October
- Records since 2000
- 1,211
Serrated wintergreen
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 56
Serratia marcescens
- Group
- Microorganisms and protists
- Records since 2000
- 241
- Counties with records
- 1
Serratia proteamaculans
- Group
- Microorganisms and protists
- Peak month
- August
- Records since 2000
- 51
Serromyia femorata
- Group
- True flies
- Peak month
- June
- Records since 2000
- 173
Sertularella gaudichaudi
- Group
- Jellyfish, corals and anemones
- Peak month
- September
- Records since 2000
- 244
Sertularella gayi
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 1,190
Sertularella rugosa
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 281
Sertularella tenella
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 64
Sertulicium niveocremeum
- Group
- Fungi
- Peak month
- February
- Records since 2000
- 75
Sesia bembeciformis
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 190
Sessile Grimmia
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 2,708
Sessile Oak
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 3,548
Setaceous Hebrew Character
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 12,973
Setosabatieria hilarula
- Group
- Roundworms
- Peak month
- November
- Records since 2000
- 62
Setosella vulnerata
- Group
- Bryozoans
- Peak month
- September
- Records since 2000
- 59
Seven-armed Starfish
- Group
- Starfish and sea urchins
- Peak month
- September
- Records since 2000
- 5,026
Seven-spot Ladybird
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 107,618
Shaded Broad-bar
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 2,423
Shaded pug
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 138
Shaded Wood-moss
- Group
- Mosses
- Peak month
- February
- Records since 2000
- 576
Shadow Greenshield Lichen
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 686
Shadow Stretch Spider
- Group
- Spiders
- Peak month
- June
- Records since 2000
- 550
Shady Earwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 999
Shaggy Bracket
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 703
Shaggy Inkcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 2,784
Shaggy Mining Bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 677
Shaggy Parasol
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,397
Shaggy Scalycap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,192
Shaggy Soldier
- Group
- Flowering plants
- Peak month
- September
- Records since 2000
- 1,308
Shagreen ray
- Group
- Fish
- Peak month
- September
- Records since 2000
- 1,456
Shallon
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,265
Shanny
- Group
- Fish
- Peak month
- August
- Records since 2000
- 1,564
Sharp Rock-bristle
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 119
Sharp Rush
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 145
Sharp-angled carpet
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 364
Sharp-Angled Peacock
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 519
Sharp-collared Furrow Bee
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 1,047
Sharp-flowered Rush
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 5,653
Sharp-leaved Blindia
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 3,255
Sharp-leaved Fluellen
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 585
Sharp-leaved Pondweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 120
Sharp-Tailed Sandpiper
- Group
- Birds
- Peak month
- August
- Records since 2000
- 118
Sharp-toothed Hawkweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 540
Sharpleaf Ragged Rim-lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 963
Sharp’s parallel diver
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 127
Shaw's Bristle-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 2,410
Shears
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 2,077
Sheathed Woodtuft
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,010
Sheep Tick
- Group
- Mites, harvestmen and other arachnids
- Peak month
- June
- Records since 2000
- 5,741
Sheep's Sorrel
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,014
Sheep's-bit
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,159
Sheep's-fescue
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 4,763
Shell lichen
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 131
Shell lichen
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 98
Shepherd's cress
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 385
Shepherd's-needle
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 107
Shepherd's-purse
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 9,963
Sherard's Downy-rose
- Group
- Flowering plants
- Peak month
- September
- Records since 2000
- 373
Shield-fern Rust
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 162
Shigella sonnei
- Group
- Microorganisms and protists
- Peak month
- March
- Records since 2000
- 173
Shining Crane's-bill
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 5,867
Shining Guest Ant
- Group
- Bees, wasps and ants
- Peak month
- September
- Records since 2000
- 138
Shining Hookeria
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 4,753
Shining Pea Mussel
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 533
Shining Pondweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 162
Shiny Camouflage Lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 4,831
Shiny Glass Snail
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 839
Shiny nut clam
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 8,606
Shiny riverbank ground beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 2,479
Shore Dock
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 88
Shore Feather Duster Worm
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 1,044
Shore fly
- Group
- True flies
- Peak month
- July
- Records since 2000
- 612
Shore fly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 599
Shore rockling
- Group
- Fish
- Peak month
- March
- Records since 2000
- 156
Shore Sexton Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,110
Shoreweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 441
Short-beaked common dolphin
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 1,652
Short-beaked Wood-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 1,819
Short-billed Dowitcher
- Group
- Birds
- Peak month
- September
- Records since 2000
- 80
Short-cloaked Moth
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 1,124
Short-eared Owl
- Group
- Birds
- Peak month
- January
- Records since 2000
- 23,364
Short-fringed Miner
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 1,086
Short-fruited Willowherb
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,651
Short-horned Black Legionnaire
- Group
- True flies
- Peak month
- June
- Records since 2000
- 686
Short-leaved Pocket-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 2,614
Short-necked gazelle beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 5,096
Short-Snouted Seahorse
- Group
- Fish
- Peak month
- July
- Records since 2000
- 130
Short-styled Field-rose
- Group
- Flowering plants
- Peak month
- September
- Records since 2000
- 83
Short-toed eagle
- Group
- Birds
- Peak month
- June
- Records since 2000
- 114
Short-Toed Treecreeper
- Group
- Birds
- Peak month
- March
- Records since 2000
- 84
Short-toothed Herald Snail
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 1,051
Short-winged Conehead
- Group
- Grasshoppers and crickets
- Peak month
- August
- Records since 2000
- 2,376
Short-winged cranefly
- Group
- True flies
- Peak month
- October
- Records since 2000
- 1,252
Short-winged rhopalid
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 1,368
Shortfin Mako
- Group
- Fish
- Peak month
- January
- Records since 2000
- 106
Shorthorn sculpin, Bull-rout
- Group
- Fish
- Peak month
- August
- Records since 2000
- 5,965
Shoulder-Striped Wainscot
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 1,277
Showy Bristle-moss
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 136
Showy Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 671
Showy forsythia
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 62
Showy mullein
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 66
Shrill Carder Bee
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 2,973
Shrubby Cinquefoil
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 2,502
Shrubby Hare's Ear
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 181
Shrubby Sea-blite
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 444
Shuttle-shaped Dart
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 13,962
Shy albatross
- Group
- Birds
- Peak month
- October
- Records since 2000
- 74
Sialis fuliginosa
- Group
- Other insects
- Peak month
- April
- Records since 2000
- 114
Sibbaldia
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 216
Siberian Accentor
- Group
- Birds
- Peak month
- October
- Records since 2000
- 205
Siberian Stonechat
- Group
- Birds
- Peak month
- October
- Records since 2000
- 592
Siberian Thrush
- Group
- Birds
- Peak month
- October
- Records since 2000
- 93
Sibinia arenariae
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 70
Sibinia primita
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 82
Sickener
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 575
Sickle Hydroid
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 7,170
Sickle Medick
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 52
Sickle-bearing Bush-Cricket
- Group
- Grasshoppers and crickets
- Peak month
- August
- Records since 2000
- 57
Sickle-leaved Hook-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 1,532
Side-fruited Crisp-moss
- Group
- Mosses
- Peak month
- February
- Records since 2000
- 567