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Garden Snail
Cornu aspersum
29 observations
Common Atlantic Slippersnail
Crepidula fornicata
24 observations
European Common Cuttlefish
Sepia officinalis
21 observations
Warty Doris
Doris verrucosa
21 observations
Common Whelk
Buccinum undatum
14 observations
Netted Dogwhelk
Tritia reticulata
13 observations
European Flat Oyster
Ostrea edulis
9 observations
Blue Mussel
Mytilus edulis
9 observations
Haminoea navicula
Haminoea navicula
9 observations
Purple Topshell
Steromphala umbilicalis
9 observations
Grey Topshell
Steromphala cineraria
9 observations
Great Scallop
Pecten maximus
8 observations
Pacific Oyster
Magallana gigas
8 observations
European Painted Top Shell
Calliostoma zizyphinum
7 observations
Variegated Scallop
Mimachlamys varia
7 observations
European cowrie
Trivia monacha
6 observations
Atlantic Dogwhelk
Nucella lapillus
5 observations
Common Cockle
Cerastoderma edule
5 observations
Turban Topshell
Gibbula magus
5 observations
Common Periwinkle
Littorina littorea
4 observations
Grey Mail-shell
Lepidochitona cinerea
4 observations
Anomia ephippium
Anomia ephippium
4 observations
Sap-sucking Slug
Elysia viridis
4 observations
White-lipped Snail
Cepaea hortensis
3 observations
Northern Quahog
Mercenaria mercenaria
3 observations
Laver Spire-shell
Peringia ulvae
3 observations
Large Necklace Shell
Euspira catena
3 observations
Side-gilled Seaslug
Berthella plumula
2 observations
Common European Limpet
Patella vulgata
2 observations
Queen scallop
Aequipecten opercularis
2 observations
Norwegian Egg Cockle
Laevicardium crassum
2 observations
Truncate Softshell Clam
Mya truncata
2 observations
European Sting Winkle
Ocenebra erinaceus
2 observations
Crimson Hermaea
Hermaea bifida
2 observations
Acanthochitona fascicularis
Acanthochitona fascicularis
2 observations
Pink Coryphella
Edmundsella pedata
2 observations
Brown-lipped Snail
Cepaea nemoralis
1 observations
Winged Thecacera
Thecacera pennigera
1 observations
Aeolidiella glauca
Aeolidiella glauca
1 observations
Aeolidiella alderi
Aeolidiella alderi
1 observations
Great Pond Snail
Lymnaea stagnalis
1 observations
Leopard Slug
Limax maximus
1 observations
Soft-shelled Clam
Mya arenaria
1 observations
Kentish Nun Snail
Monacha cantiana
1 observations
Vineyard Snail
Cernuella virgata
1 observations
Great Ram's-horn
Planorbarius corneus
1 observations
Atlantic Bobtail
Sepiola atlantica
1 observations
grooved carpet shell
Ruditapes decussatus
1 observations
Pod Razor
Ensis siliqua
1 observations
Round-mouthed Snail
Pomatias elegans
1 observations
Frequently Asked Questions
- The 10 most common molluscs in Portsmouth are:
- Garden Snail (Cornu aspersum)
- Common Atlantic Slippersnail (Crepidula fornicata)
- European Common Cuttlefish (Sepia officinalis)
- Warty Doris (Doris verrucosa)
- Common Whelk (Buccinum undatum)
- Netted Dogwhelk (Tritia reticulata)
- European Flat Oyster (Ostrea edulis)
- Blue Mussel (Mytilus edulis)
- Haminoea navicula
- Purple Topshell (Steromphala umbilicalis)
- The most observed mollusc in Portsmouth is Garden Snail (Cornu aspersum), with 29 recorded observations.