Tanaopsis graciloides
- Group
- Crustaceans
- Peak month
- May
- Records since 2000
- 4,001
Described in 1864
44 species
Sthenelais limicola
- Group
- Worms (annelids)
- Peak month
- June
- Records since 2000
- 3,852
Achelia echinata
- Group
- Other invertebrates
- Peak month
- May
- Records since 2000
- 2,970
Phytomyza milii
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,754
Eurysyllis tuberculata
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 1,185
Capitellid Thread Worm
- Group
- Worms (annelids)
- Peak month
- May
- Records since 2000
- 1,059
Longnose velvet dogfish
- Group
- Fish
- Peak month
- September
- Records since 2000
- 758
Cyrnus flavidus
- Group
- Caddisflies
- Peak month
- July
- Records since 2000
- 756
Subadyte pellucida
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 559
Plagioecia sarniensis
- Group
- Bryozoans
- Peak month
- June
- Records since 2000
- 547
Oxydromus pallidus
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 454
Gomphonema angustatum
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 418
Synchelidium haplocheles
- Group
- Crustaceans
- Peak month
- July
- Records since 2000
- 354
Portuguese Dogfish
- Group
- Fish
- Peak month
- September
- Records since 2000
- 319
Pleurogonium rubicundum
- Group
- Crustaceans
- Peak month
- May
- Records since 2000
- 312
Diastylis cornuta
- Group
- Crustaceans
- Peak month
- October
- Records since 2000
- 295
Large-mouthed Valve Snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 295
Agrypnia obsoleta
- Group
- Caddisflies
- Peak month
- August
- Records since 2000
- 281
Dicranomyia goritiensis
- Group
- True flies
- Peak month
- June
- Records since 2000
- 250
Pseudarachna hirsuta
- Group
- Crustaceans
- Peak month
- May
- Records since 2000
- 243
Araphura brevimanus
- Group
- Crustaceans
- Peak month
- July
- Records since 2000
- 216
Longitarsus gracilis
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 209
Ammothella longipes
- Group
- Other invertebrates
- Peak month
- June
- Records since 2000
- 176
Cylindroiulus caeruleocinctus
- Group
- Millipedes
- Peak month
- April
- Records since 2000
- 176
Asciodema obsoleta
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 174
Anoplodactylus pygmaeus
- Group
- Other invertebrates
- Peak month
- June
- Records since 2000
- 173
Leptognathia breviremis
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 173
Chaetoceros sociale
- Group
- Seaweeds and algae
- Peak month
- May
- Records since 2000
- 142
Thyasira polygona
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 138
Typhlotanais aequiremis
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 129
Tachydromia aemula
- Group
- True flies
- Peak month
- June
- Records since 2000
- 126
Orthotylus ochrotrichus
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 103
Harmothoe spinifera
- Group
- Worms (annelids)
- Peak month
- April
- Records since 2000
- 101
Europiella artemisiae
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 95
Bibio longipes
- Group
- True flies
- Peak month
- September
- Records since 2000
- 92
Proceraea picta
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 92
Squamapion cineraceum
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 90
Stigmus solskyi
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 87
Eunotia pectinalis
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 82
Achelia laevis
- Group
- Other invertebrates
- Peak month
- April
- Records since 2000
- 56
Acletoxenus formosus
- Group
- True flies
- Peak month
- October
- Records since 2000
- 53
Halicnemia patera
- Group
- Sponges
- Peak month
- September
- Records since 2000
- 53
Thrypticus smaragdinus
- Group
- True flies
- Peak month
- June
- Records since 2000
- 52
Eudendrium annulatum
- Group
- Jellyfish, corals and anemones
- Peak month
- May
- Records since 2000
- 51