Grey seal
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 15,095
Described in 1791
35 species
Coat-of-mail chiton
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 6,537
Bean-Like Tellin
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 5,883
Kidney-spot Ladybird
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 3,907
Anoplotrupes stercorosus
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 2,888
Little Snipefly
- Group
- True flies
- Peak month
- July
- Records since 2000
- 2,646
Orange-legged Furrow Bee
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 2,303
Corrugated venus
- Group
- Molluscs
- Peak month
- March
- Records since 2000
- 1,708
Spotted lacehopper
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 1,581
Faroe sunset shell
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 1,548
Oak Apple Gall Causer
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 1,088
Flame Shell
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 994
Poli's Stellate Barnacle
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 906
Striate Lyonsia
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 776
Norway cockle
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 732
Woodland Dor Beetle
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 711
Barrel jellyfish
- Group
- Jellyfish, corals and anemones
- Peak month
- September
- Records since 2000
- 641
Dark Chestnut
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 625
China Limpet
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 516
Euglesa casertana
- Group
- Molluscs
- Peak month
- December
- Records since 2000
- 433
Parvicardium exiguum
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 384
Antennella secundaria
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 266
Eana penziana
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 249
Paromalus flavicornis
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 196
Anisotoma humeralis
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 185
Doto coronata
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 179
Lasaea adansoni
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 173
Physiphora alceae
- Group
- True flies
- Peak month
- August
- Records since 2000
- 169
Eriocrania sparrmannella
- Group
- Butterflies and moths
- Peak month
- April
- Records since 2000
- 123
Theroscopus hemipteron
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 89
Aedes geniculatus
- Group
- True flies
- Peak month
- June
- Records since 2000
- 86
Hawk's-Beard Mining-Bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 75
Pselaphus heisei
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 68
Hypocaccus metallicus
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 66
Volutopsius norwegicus
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 65