Veined squid
- Peak month
- February
- Records since 2000
- 45,144
- Scientific name
- Loligo forbesii
New Zealand Mudsnail
- Peak month
- September
- Records since 2000
- 44,337
- Scientific name
- Potamopyrgus antipodarum
Garden Snail
- Peak month
- June
- Records since 2000
- 23,914
- Scientific name
- Cornu aspersum
European common squid
- Peak month
- February
- Records since 2000
- 23,430
- Scientific name
- Alloteuthis subulata
Queen Scallop
- Peak month
- September
- Records since 2000
- 21,571
- Scientific name
- Aequipecten opercularis
Common Mussel
- Peak month
- June
- Records since 2000
- 18,892
- Scientific name
- Mytilus edulis
Brown Lipped Snail
- Peak month
- May
- Records since 2000
- 18,559
- Scientific name
- Cepaea nemoralis
Two-toothed Montagu shell
- Peak month
- June
- Records since 2000
- 17,412
- Scientific name
- Kurtiella bidentata
White abra
- Peak month
- June
- Records since 2000
- 17,268
- Scientific name
- Abra alba
Painted Top Shell
- Peak month
- June
- Records since 2000
- 14,155
- Scientific name
- Calliostoma zizyphinum
White-lipped Snail
- Peak month
- May
- Records since 2000
- 13,376
- Scientific name
- Cepaea hortensis
Great Scallop
- Peak month
- March
- Records since 2000
- 11,696
- Scientific name
- Pecten maximus
Flexuose Cleftclam
- Peak month
- May
- Records since 2000
- 11,473
- Scientific name
- Thyasira flexuosa
Slipper Limpet, Slipper shell, Oyster-pest, Common Atlantic slippersnail
- Peak month
- September
- Records since 2000
- 10,927
- Scientific name
- Crepidula fornicata
Grey Field Slug
- Peak month
- May
- Records since 2000
- 10,855
- Scientific name
- Deroceras reticulatum
Common Whelk
- Peak month
- June
- Records since 2000
- 10,801
- Scientific name
- Buccinum undatum
Reddish snail
- Peak month
- May
- Records since 2000
- 8,969
- Scientific name
- Trochulus striolatus
Dog Whelk
- Peak month
- August
- Records since 2000
- 8,771
- Scientific name
- Nucella lapillus
Grey Top Shell
- Peak month
- August
- Records since 2000
- 8,765
- Scientific name
- Steromphala cineraria
Shiny nut clam
- Peak month
- June
- Records since 2000
- 8,606
- Scientific name
- Nucula nitidosa
Common Basket-shell
- Peak month
- June
- Records since 2000
- 8,339
- Scientific name
- Varicorbula gibba
Common Cuttlefish
- Peak month
- March
- Records since 2000
- 8,293
- Scientific name
- Sepia officinalis
Rotund disc
- Peak month
- April
- Records since 2000
- 8,184
- Scientific name
- Discus rotundatus
Oval venus
- Peak month
- August
- Records since 2000
- 7,943
- Scientific name
- Timoclea ovata
Common Periwinkle
- Peak month
- August
- Records since 2000
- 7,788
- Scientific name
- Littorina littorea
Kentish Snail
- Peak month
- May
- Records since 2000
- 7,788
- Scientific name
- Monacha cantiana
Transparent Razor
- Peak month
- June
- Records since 2000
- 7,406
- Scientific name
- Phaxas pellucidus
Glossy furrow-shell
- Peak month
- June
- Records since 2000
- 7,146
- Scientific name
- Abra nitida
Green Cellar Slug
- Peak month
- April
- Records since 2000
- 7,133
- Scientific name
- Limacus maculatus
Wandering Snail
- Peak month
- September
- Records since 2000
- 7,038
- Scientific name
- Ampullaceana balthica
Dusky Slug
- Peak month
- May
- Records since 2000
- 6,949
- Scientific name
- Arion subfuscus
Great Grey Slug
- Peak month
- May
- Records since 2000
- 6,803
- Scientific name
- Limax maximus
Common Squid
- Peak month
- October
- Records since 2000
- 6,543
- Scientific name
- Loligo vulgaris
Coat-of-mail chiton
- Peak month
- August
- Records since 2000
- 6,537
- Scientific name
- Leptochiton asellus
Bean-Like Tellin
- Peak month
- June
- Records since 2000
- 5,883
- Scientific name
- Fabulina fabula
Auger Shell
- Peak month
- July
- Records since 2000
- 5,801
- Scientific name
- Turritellinella tricarinata
Common Garden Slug
- Peak month
- April
- Records since 2000
- 5,643
- Scientific name
- Arion distinctus
Striped venus
- Peak month
- June
- Records since 2000
- 5,565
- Scientific name
- Chamelea striatula
Common Cockle
- Peak month
- September
- Records since 2000
- 5,323
- Scientific name
- Cerastoderma edule
Common nut clam
- Peak month
- August
- Records since 2000
- 5,272
- Scientific name
- Nucula nucleus
Tramp slug, Brown field slug, Longneck field slug, Chestnut Slug
- Peak month
- April
- Records since 2000
- 5,242
- Scientific name
- Deroceras invadens
Alder's necklace shell
- Peak month
- July
- Records since 2000
- 5,202
- Scientific name
- Euspira nitida
Laver Spire Snail
- Peak month
- September
- Records since 2000
- 5,079
- Scientific name
- Peringia ulvae
Curled Octopus
- Peak month
- August
- Records since 2000
- 5,022
- Scientific name
- Eledone cirrhosa
Cylinder Shell
- Peak month
- June
- Records since 2000
- 4,867
- Scientific name
- Cylichna cylindracea
Broadtail Shortfin Squid
- Peak month
- February
- Records since 2000
- 4,849
- Scientific name
- Illex coindetii
River Limpet
- Peak month
- September
- Records since 2000
- 4,616
- Scientific name
- Ancylus fluviatilis
Common Limpet
- Peak month
- August
- Records since 2000
- 4,578
- Scientific name
- Patella vulgata