Marbled Swimming Crab
- Group
- Crustaceans
- Records since 2000
- 581
- Scientific name
- Liocarcinus marmoreus
Risso's dolphin
- Group
- Mammals
- Records since 2000
- 581
- Scientific name
- Grampus griseus
Pachygnatha clercki
- Group
- Spiders
- Records since 2000
- 580
- Peak month
- August
Rust Fungus
- Group
- Fungi
- Records since 2000
- 579
- Scientific name
- Puccinia brachypodii
Bordered Beauty
- Group
- Butterflies and moths
- Records since 2000
- 576
- Scientific name
- Epione repandaria
Violet Rust
- Group
- Fungi
- Records since 2000
- 575
- Scientific name
- Puccinia violae
Laccophilus hyalinus
- Group
- Beetles
- Records since 2000
- 573
- Also known as
- dinghy skipper
Aureobasidium pullulans
- Group
- Fungi
- Records since 2000
- 572
- Peak month
- August
Slender knapweed
- Group
- Flowering plants
- Records since 2000
- 568
- Scientific name
- Centaurea debeauxii
Prenantia cheilostoma
- Group
- Bryozoans
- Records since 2000
- 567
- Peak month
- August
Strawberry Root Weevil
- Group
- Beetles
- Records since 2000
- 567
- Scientific name
- Otiorhynchus ovatus
Cattail bug
- Group
- True bugs
- Records since 2000
- 565
- Scientific name
- Chilacis typhae
Common Millet
- Group
- Flowering plants
- Records since 2000
- 565
- Scientific name
- Panicum miliaceum
Atlantic wolffish, Wolf-fish
- Group
- Fish
- Records since 2000
- 564
- Scientific name
- Anarhichas lupus
Deeplet Sea Anemone
- Group
- Jellyfish, corals and anemones
- Records since 2000
- 564
- Scientific name
- Bolocera tuediae
Trailing Tormentil
- Group
- Flowering plants
- Records since 2000
- 564
- Scientific name
- Potentilla anglica
Vitreolina philippi
- Group
- Molluscs
- Records since 2000
- 564
- Peak month
- August
Woodland Grasshopper
- Group
- Grasshoppers and crickets
- Records since 2000
- 562
- Scientific name
- Omocestus rufipes
Two-faced harp ground beetle
- Group
- Beetles
- Records since 2000
- 560
- Scientific name
- Amara bifrons
Subadyte pellucida
- Group
- Worms (annelids)
- Records since 2000
- 559
- Peak month
- August
Toxonevra muliebris
- Group
- True flies
- Records since 2000
- 559
- Peak month
- August
Cardiastethus fasciiventris
- Group
- True bugs
- Records since 2000
- 557
- Peak month
- August
Ginger Button
- Group
- Butterflies and moths
- Records since 2000
- 557
- Scientific name
- Acleris aspersana
Mortierella pulchella
- Group
- Fungi
- Records since 2000
- 557
- Peak month
- August
Gammaropsis lobata
- Group
- Crustaceans
- Records since 2000
- 555
- Peak month
- August
Floating Crystalwort
- Group
- Liverworts
- Records since 2000
- 554
- Scientific name
- Riccia fluitans
Trifid Bur-marigold, Three-lobe beggarticks, Three-part beggarticks, Leafy-bracted beggarticks
- Group
- Flowering plants
- Records since 2000
- 554
- Scientific name
- Bidens tripartita
Pink Earth Lichen
- Group
- Lichens
- Records since 2000
- 553
- Scientific name
- Dibaeis baeomyces
Alder Wrinkle
- Group
- Fungi
- Records since 2000
- 551
- Scientific name
- Taphrina tosquinetii
Eurithia anthophila
- Group
- True flies
- Records since 2000
- 551
- Peak month
- August
Knufia petricola
- Group
- Fungi
- Records since 2000
- 551
- Peak month
- August
Suborbicular Kellyclam
- Group
- Molluscs
- Records since 2000
- 551
- Scientific name
- Kellia suborbicularis
Black mold
- Group
- Fungi
- Records since 2000
- 548
- Scientific name
- Stachybotrys chartarum
Symmetrospora coprosmae
- Group
- Fungi
- Records since 2000
- 548
- Peak month
- August
Dendrophoma cytisporoides
- Group
- Fungi
- Records since 2000
- 547
- Peak month
- August
Cradoscrupocellaria reptans
- Group
- Bryozoans
- Records since 2000
- 546
- Peak month
- August
Rayed trough-shell
- Group
- Molluscs
- Records since 2000
- 546
- Scientific name
- Mactra corallina
Cobalt Crust
- Group
- Fungi
- Records since 2000
- 545
- Scientific name
- Terana caerulea
Ear Moth
- Group
- Butterflies and moths
- Records since 2000
- 545
- Scientific name
- Amphipoea oculea
Cheilosia vernalis
- Group
- True flies
- Records since 2000
- 544
- Peak month
- August
Leprocaulon calcicola
- Group
- Lichens
- Records since 2000
- 544
- Peak month
- August
Paradendryphiella salina
- Group
- Fungi
- Records since 2000
- 544
- Peak month
- August
Holt's Mouse-tail Moss
- Group
- Mosses
- Records since 2000
- 543
- Scientific name
- Pseudisothecium holtii
Eusirus longipes
- Group
- Crustaceans
- Records since 2000
- 542
- Peak month
- August
Sige fusigera
- Group
- Worms (annelids)
- Records since 2000
- 542
- Peak month
- August
Syllis gracilis
- Group
- Worms (annelids)
- Records since 2000
- 542
- Peak month
- August
Cryptococcus uniguttulatus
- Group
- Fungi
- Records since 2000
- 541
- Peak month
- August
Daldinia concentrica
- Group
- Fungi
- Records since 2000
- 541
- Peak month
- August