Horny Orb Mussel
- Peak month
- May
- Records since 2000
- 2,423
- Scientific name
- Sphaerium corneum
Glistenworm
- Peak month
- May
- Records since 2000
- 2,345
- Scientific name
- Chaetoderma nitidulum
Whirlpool Ramshorn
- Peak month
- June
- Records since 2000
- 2,334
- Scientific name
- Anisus vortex
Arctic cancellate chiton
- Peak month
- August
- Records since 2000
- 2,332
- Scientific name
- Leptochiton cancellatus
Wrinkled Snail
- Peak month
- June
- Records since 2000
- 2,323
- Scientific name
- Xeroplexa intersecta
Small-Ear Fileclam
- Peak month
- August
- Records since 2000
- 2,321
- Scientific name
- Limatula subauriculata
Tiny risso snail
- Peak month
- September
- Records since 2000
- 2,312
- Scientific name
- Rissoa parva
Blue rayed limpet
- Peak month
- September
- Records since 2000
- 2,309
- Scientific name
- Patella pellucida
Cut surfclam
- Peak month
- September
- Records since 2000
- 2,307
- Scientific name
- Spisula subtruncata
Margined Ramshorn
- Peak month
- May
- Records since 2000
- 2,217
- Scientific name
- Planorbis planorbis
Sea Lemon
- Peak month
- August
- Records since 2000
- 2,152
- Scientific name
- Doris pseudoargus
Parvicardium scabrum
- Peak month
- March
- Records since 2000
- 2,101
- Group
- Molluscs
Pink Coryphella
- Peak month
- June
- Records since 2000
- 2,061
- Scientific name
- Edmundsella pedata
Little Astarte Clam
- Peak month
- July
- Records since 2000
- 2,048
- Scientific name
- Goodallia triangularis
Striped Venus Clam
- Peak month
- July
- Records since 2000
- 2,026
- Scientific name
- Chamelea gallina
Rayed Artemis
- Peak month
- July
- Records since 2000
- 2,022
- Scientific name
- Dosinia exoleta
Pfeiffer's amber snail
- Peak month
- May
- Records since 2000
- 1,973
- Scientific name
- Oxyloma elegans
Hedgehog Slug
- Peak month
- September
- Records since 2000
- 1,879
- Scientific name
- Arion intermedius
Common Flat Periwinkle
- Peak month
- August
- Records since 2000
- 1,870
- Scientific name
- Littorina obtusata
Common Elephant Tusk
- Peak month
- May
- Records since 2000
- 1,845
- Scientific name
- Antalis entalis
Maritime gardensnail
- Peak month
- September
- Records since 2000
- 1,820
- Scientific name
- Cernuella virgata
Keeled Ramshorn
- Peak month
- July
- Records since 2000
- 1,813
- Scientific name
- Planorbis carinatus
Marbled Crenella
- Peak month
- May
- Records since 2000
- 1,808
- Scientific name
- Musculus subpictus
Smooth Nutclam
- Peak month
- March
- Records since 2000
- 1,758
- Scientific name
- Ennucula tenuis
Common Tortoiseshell Limpet
- Peak month
- September
- Records since 2000
- 1,749
- Scientific name
- Testudinalia testudinalis
Spotted Cowrie
- Peak month
- May
- Records since 2000
- 1,740
- Scientific name
- Trivia monacha
Banded venus
- Peak month
- April
- Records since 2000
- 1,735
- Scientific name
- Clausinella fasciata
Thracia villosiuscula
- Peak month
- July
- Records since 2000
- 1,715
- Group
- Molluscs
Corrugated venus
- Peak month
- March
- Records since 2000
- 1,708
- Scientific name
- Venerupis corrugata
Semi-ribbed spire snail
- Peak month
- September
- Records since 2000
- 1,686
- Scientific name
- Onoba semicostata
Oval Cockle
- Peak month
- September
- Records since 2000
- 1,682
- Scientific name
- Parvicardium pinnulatum
Pellucid Glass Snail
- Peak month
- September
- Records since 2000
- 1,680
- Scientific name
- Vitrina pellucida
Plaited Door Snail
- Peak month
- May
- Records since 2000
- 1,675
- Scientific name
- Cochlodina laminata
Twisted Ramshorn
- Peak month
- May
- Records since 2000
- 1,674
- Scientific name
- Bathyomphalus contortus
Polycera faeroensis
- Peak month
- June
- Records since 2000
- 1,650
- Group
- Molluscs
Orange-Clubbed Sea Slug
- Peak month
- July
- Records since 2000
- 1,616
- Scientific name
- Limacia clavigera
Little Cuttlefish, Little Cuttle
- Peak month
- September
- Records since 2000
- 1,601
- Scientific name
- Sepiola atlantica
Greenhouse Slug
- Peak month
- September
- Records since 2000
- 1,591
- Scientific name
- Ambigolimax valentianus
Warty Arion
- Peak month
- September
- Records since 2000
- 1,582
- Scientific name
- Arion owenii
Pointed Snail
- Peak month
- August
- Records since 2000
- 1,568
- Scientific name
- Cochlicella acuta
Undulated False Lucine
- Peak month
- September
- Records since 2000
- 1,567
- Scientific name
- Mysia undata
European prickly cockle
- Peak month
- August
- Records since 2000
- 1,561
- Scientific name
- Acanthocardia echinata
Leach's Bithynia
- Peak month
- May
- Records since 2000
- 1,558
- Scientific name
- Bithynia leachii
Dwarf Pond Snail
- Peak month
- July
- Records since 2000
- 1,548
- Scientific name
- Galba truncatula
Faroe sunset shell
- Peak month
- June
- Records since 2000
- 1,548
- Scientific name
- Gari fervensis
Lobe Shell
- Peak month
- September
- Records since 2000
- 1,537
- Scientific name
- Philine quadripartita
Moerella donacina
- Peak month
- August
- Records since 2000
- 1,499
- Group
- Molluscs
Four-lined Polycera
- Peak month
- July
- Records since 2000
- 1,471
- Scientific name
- Polycera quadrilineata