Doto dunnei
- Peak month
- June
- Records since 2000
- 69
- Group
- Molluscs
Doto millbayana
- Peak month
- June
- Records since 2000
- 68
- Group
- Molluscs
Euglesa supina
- Peak month
- December
- Records since 2000
- 68
- Group
- Molluscs
Iridescent pea mussel
- Peak month
- September
- Records since 2000
- 67
- Scientific name
- Euglesa pulchella
Noemiamea dolioliformis
- Peak month
- June
- Records since 2000
- 67
- Group
- Molluscs
Swollen Spire Snail
- Peak month
- April
- Records since 2000
- 67
- Scientific name
- Mercuria tachoensis
Diaphorodoris alba
- Peak month
- June
- Records since 2000
- 66
- Group
- Molluscs
Leucophytia bidentata
- Peak month
- October
- Records since 2000
- 66
- Group
- Molluscs
Trophonopsis barvicensis
- Peak month
- March
- Records since 2000
- 66
- Group
- Molluscs
Nut orb mussel
- Peak month
- September
- Records since 2000
- 65
- Scientific name
- Sphaerium rivicola
Volutopsius norwegicus
- Peak month
- August
- Records since 2000
- 65
- Group
- Molluscs
Cylichna alba
- Peak month
- July
- Records since 2000
- 64
- Group
- Molluscs
Doto tuberculata
- Peak month
- June
- Records since 2000
- 64
- Group
- Molluscs
Trapania lineata
- Peak month
- June
- Records since 2000
- 64
- Group
- Molluscs
Volvulella acuminata
- Peak month
- April
- Records since 2000
- 64
- Group
- Molluscs
Propebela rufa
- Peak month
- July
- Records since 2000
- 63
- Group
- Molluscs
Eubranchus exiguus
- Peak month
- June
- Records since 2000
- 62
- Group
- Molluscs
Lilljeborg’s pea mussel
- Peak month
- March
- Records since 2000
- 62
- Scientific name
- Euglesa lilljeborgii
Lutraria angustior
- Peak month
- March
- Records since 2000
- 62
- Group
- Molluscs
Menetus dilatatus
- Peak month
- August
- Records since 2000
- 62
- Group
- Molluscs
Thyasira biplicata
- Peak month
- May
- Records since 2000
- 62
- Group
- Molluscs
Tergipes tergipes
- Peak month
- May
- Records since 2000
- 61
- Group
- Molluscs
Candidula unifasciata
- Peak month
- July
- Records since 2000
- 60
- Group
- Molluscs
Coracuta obliquata
- Peak month
- July
- Records since 2000
- 60
- Group
- Molluscs
Heleobia charruana
- Peak month
- September
- Records since 2000
- 60
- Group
- Molluscs
Limapontia depressa
- Peak month
- August
- Records since 2000
- 60
- Group
- Molluscs
Vertigo pusilla
- Peak month
- October
- Records since 2000
- 60
- Group
- Molluscs
Polycera kernowensis
- Peak month
- May
- Records since 2000
- 59
- Group
- Molluscs
Laona quadrata
- Peak month
- August
- Records since 2000
- 58
- Group
- Molluscs
Rhopalomenia aglaopheniae
- Peak month
- March
- Records since 2000
- 58
- Group
- Molluscs
Thracia distorta
- Peak month
- August
- Records since 2000
- 58
- Group
- Molluscs
Bearded horse-mussel
- Peak month
- September
- Records since 2000
- 56
- Scientific name
- Modiolus barbatus
Hiatella rugosa
- Peak month
- July
- Records since 2000
- 56
- Group
- Molluscs
Simnia hiscocki
- Peak month
- July
- Records since 2000
- 55
- Group
- Molluscs
Turbonilla lactea
- Peak month
- August
- Records since 2000
- 55
- Group
- Molluscs
Vertigo alpestris
- Peak month
- May
- Records since 2000
- 55
- Group
- Molluscs
Oxyloma sarsii
- Peak month
- June
- Records since 2000
- 54
- Group
- Molluscs
Pelagella castanea
- Peak month
- July
- Records since 2000
- 54
- Group
- Molluscs
Aclis walleri
- Peak month
- March
- Records since 2000
- 53
- Group
- Molluscs
Eubranchus vittatus
- Peak month
- July
- Records since 2000
- 53
- Group
- Molluscs
Liostomia clavula
- Peak month
- March
- Records since 2000
- 53
- Group
- Molluscs
Lomanotus marmoratus
- Peak month
- August
- Records since 2000
- 53
- Group
- Molluscs
Catriona gymnota
- Peak month
- July
- Records since 2000
- 52
- Group
- Molluscs
Rubramoena rubescens
- Peak month
- May
- Records since 2000
- 52
- Group
- Molluscs
Vitrea subrimata
- Peak month
- August
- Records since 2000
- 52
- Group
- Molluscs
Alinda biplicata
- Peak month
- October
- Records since 2000
- 50
- Group
- Molluscs
Chrysallida indistincta
- Peak month
- April
- Records since 2000
- 50
- Group
- Molluscs
Palliolum striatum
- Peak month
- May
- Records since 2000
- 50
- Group
- Molluscs