Biodiversity & Conservation

Snails, slugs, mussels, cockles, clams & squid (Mollusca)

Chitons or 'coat-of-mail' shells (Polyplacophora)

Neoloricata

A chiton
Acanthochitona crinita

Acanthochitona crinita

A bristled chiton
Acanthochitona fascicularis

Acanthochitona fascicularis

A chiton
Leptochiton scabridus

Leptochiton scabridus

A chiton
Tonicella marmorea

Tonicella marmorea

Snails, slugs & sea butterflies (Gastropoda)

Archaeogastropoda

Painted top shell
Calliostoma zizyphinum

Calliostoma zizyphinum

Green ormer
Haliotis tuberculata

Haliotis tuberculata

Blue-rayed limpet
Patella pellucida

Patella pellucida

Pearly top shell
Margarites helicinus

Margarites helicinus

Black-footed limpet
Patella depressa

Patella depressa

China limpet
Patella ulyssiponensis

Patella ulyssiponensis

Common limpet
Patella vulgata

Patella vulgata

Common tortoiseshell limpet
Testudinalia testudinalis

Testudinalia testudinalis

Pheasant shell
Tricolia pullus

Tricolia pullus

A keyhole limpet
Diodora graeca

Diodora graeca

Slit limpet
Emarginula fissura

Emarginula fissura

Grey top shell
Gibbula cineraria

Gibbula cineraria

Flat top shell
Gibbula umbilicalis

Gibbula umbilicalis

Grooved top shell
Jujubinus striatus

Jujubinus striatus

Thick top shell
Osilinus lineatus

Osilinus lineatus

Mesogastropoda

Common pelican's foot
Aporrhais pespelecani

Aporrhais pespelecani

Needle whelk
Bittium reticulatum

Bittium reticulatum

DeFolin's lagoon snail
Caecum armoricum

Caecum armoricum

Chinaman's hat
Calyptraea chinensis

Calyptraea chinensis

Slipper limpet
Crepidula fornicata

Crepidula fornicata

Necklace shell
Euspira catena

Euspira catena

Laver spire shell
Hydrobia ulvae

Hydrobia ulvae

Common periwinkle
Littorina littorea

Littorina littorea

Common flat periwinkle
Littorina obtusata

Littorina obtusata

Rough periwinkle
Littorina saxatilis

Littorina saxatilis

Small periwinkle
Melarhaphe neritoides

Melarhaphe neritoides

Lagoon snail
Paludinella littorina

Paludinella littorina

A snail
Rissoa parva

Rissoa parva

A gastropod
Simnia patula

Simnia patula

Looping snail
Truncatella subcylindrica

Truncatella subcylindrica

An auger shell
Turritella communis

Turritella communis

Velvet shell
Velutina velutina

Velutina velutina

A gastropod
Cerithiopsis tubercularis

Cerithiopsis tubercularis

Violet snail
Janthina janthina

Janthina janthina

Banded chink shell
Lacuna vincta

Lacuna vincta

Alder's necklace shell
Euspira pulchella

Euspira pulchella

Arctic cowrie
Trivia arctica

Trivia arctica

Spotted cowrie
Trivia monacha

Trivia monacha

Common wentletrap
Epitonium clathrus

Epitonium clathrus

Neogastropoda

A gastropod
Colus islandicus

Colus islandicus

Red whelk
Neptunea antiqua

Neptunea antiqua

Dog whelk
Nucella lapillus

Nucella lapillus

Oyster drill
Ocenebra erinacea

Ocenebra erinacea

American oyster drill
Urosalpinx cinerea

Urosalpinx cinerea

Common whelk
Buccinum undatum

Buccinum undatum

Thick-lipped dog whelk
Nassarius incrassatus

Nassarius incrassatus

Netted dog whelk
Nassarius reticulatus

Nassarius reticulatus

Veined rapa whelk
Rapana venosa

Rapana venosa

Cephalaspidea

A sea slug
Acteon tornatilis

Acteon tornatilis

Lobe shell
Philine aperta

Philine aperta

A sea slug
Runcina coronata

Runcina coronata

Anaspidea

Royal flush sea slug
Akera bullata

Akera bullata

Aplysiomorpha

A sea hare
Aplysia punctata

Aplysia punctata

Sacoglossa

Solar-powered sea slug
Elysia viridis

Elysia viridis

A sea slug
Stiliger bellulus

Stiliger bellulus

Notaspidea

Yellow-plumed sea slug
Berthella plumula

Berthella plumula

A sea slug
Pleurobranchus membranaceus

Pleurobranchus membranaceus

Nudibranchia

A sea slug
Acanthodoris pilosa

Acanthodoris pilosa

A sea slug
Adalaria proxima

Adalaria proxima

Grey sea slug
Aeolidia papillosa

Aeolidia papillosa

A sea slug
Aeolidiella alderi

Aeolidiella alderi

A sea slug
Aeolidiella sanguinea

Aeolidiella sanguinea

A dorid nudibranch
Aldisa zetlandica

Aldisa zetlandica

A nudibranch
Ancula gibbosa

Ancula gibbosa

Sea lemon
Archidoris pseudoargus

Archidoris pseudoargus

A sea slug
Armina loveni

Armina loveni

A sea slug
Atagema gibba

Atagema gibba

A sea slug
Cadlina laevis

Cadlina laevis

A sea slug
Caloria elegans

Caloria elegans

Scarlet lady
Coryphella browni

Coryphella browni

A sea slug
Coryphella gracilis

Coryphella gracilis

A sea slug
Coryphella lineata

Coryphella lineata

A sea slug
Crimora papillata

Crimora papillata

A sea slug
Cuthona foliata

Cuthona foliata

A sea slug
Dendronotus frondosus

Dendronotus frondosus

A sea slug
Diaphorodoris luteocincta

Diaphorodoris luteocincta

A sea slug
Doris sticta

Doris sticta

A sea slug
Doto fragilis

Doto fragilis

A sea slug
Embletonia pulchra

Embletonia pulchra

A sea slug
Eubranchus farrani

Eubranchus farrani

A sea slug
Flabellina pellucida

Flabellina pellucida

A sea slug
Geitodoris planata

Geitodoris planata

A sea slug
Goniodoris nodosa

Goniodoris nodosa

Blue spot slug
Greilada elegans

Greilada elegans

A nudibranch
Hancockia uncinata

Hancockia uncinata

A sea slug
Hero formosa

Hero formosa

A sea slug
Janolus cristatus

Janolus cristatus

A sea slug
Jorunna tomentosa

Jorunna tomentosa

Orange-clubbed sea slug
Limacia clavigera

Limacia clavigera

Yellow skirt slug
Okenia elegans

Okenia elegans

A sea slug
Okenia leachii

Okenia leachii

A sea slug
Onchidoris bilamellata

Onchidoris bilamellata

A sea slug
Onchidoris muricata

Onchidoris muricata

A sea slug
Palio nothus

Palio nothus

A sea slug
Polycera faeroensis

Polycera faeroensis

A sea slug
Polycera quadrilineata

Polycera quadrilineata

A sea slug
Rostanga rubra

Rostanga rubra

Lagoon sea slug
Tenellia adspersa

Tenellia adspersa

A sea slug
Trapania maculata

Trapania maculata

A sea slug
Trapania pallida

Trapania pallida

A sea slug
Tritonia hombergi

Tritonia hombergi

A sea slug
Tritonia nilsodhneri

Tritonia nilsodhneri

A sea slug
Facelina auriculata

Facelina auriculata

A sea slug
Facelina bostoniensis

Facelina bostoniensis

Systellommatophora

Celtic sea slug
Onchidella celtica

Onchidella celtica

Clams, cockles, mussels, oysters, and scallops (Bivalvia)

Arcoida

Dog cockle
Glycymeris glycymeris

Glycymeris glycymeris

Mytiloida

Marbled crenella
Modiolarca tumida

Modiolarca tumida

Bearded mussel
Modiolus barbatus

Modiolus barbatus

Horse mussel
Modiolus modiolus

Modiolus modiolus

Green crenella
Musculus discors

Musculus discors

Common mussel
Mytilus edulis

Mytilus edulis

Ostreoida

Queen scallop
Aequipecten opercularis

Aequipecten opercularis

Saddle oyster
Anomia ephippium

Anomia ephippium

Humpback scallop
Chlamys distorta

Chlamys distorta

Variegated scallop
Chlamys varia

Chlamys varia

Pacific oyster
Crassostrea gigas

Crassostrea gigas

American oyster
Crassostrea virginica

Crassostrea virginica

Native oyster
Ostrea edulis

Ostrea edulis

Great scallop
Pecten maximus

Pecten maximus

Veneroida

A bivalve mollusc
Abra alba

Abra alba

A bivalve mollusc
Abra nitida

Abra nitida

Spiny cockle
Acanthocardia aculeata

Acanthocardia aculeata

Thin tellin
Angulus tenuis

Angulus tenuis

Icelandic cyprine
Arctica islandica

Arctica islandica

A bivalve mollusc
Astarte sulcata

Astarte sulcata

Smooth venus
Callista chione

Callista chione

Common cockle
Cerastoderma edule

Cerastoderma edule

Lagoon cockle
Cerastoderma glaucum

Cerastoderma glaucum

Striped venus clam
Chamelea gallina

Chamelea gallina

Banded venus
Clausinella fasciata

Clausinella fasciata

Banded wedge shell
Donax vittatus

Donax vittatus

Rayed Artemis
Dosinia exoleta

Dosinia exoleta

Smooth Artemis
Dosinia lupinus

Dosinia lupinus

Bean-like tellin
Fabulina fabula

Fabulina fabula

A bivalve mollusc
Lasaea adansoni

Lasaea adansoni

A bivalve mollusc
Lucinella divaricata

Lucinella divaricata

Baltic tellin
Macoma balthica

Macoma balthica

Hard-shell clam
Mercenaria mercenaria

Mercenaria mercenaria

A bivalve mollusc
Mysella bidentata

Mysella bidentata

A cockle
Parvicardium ovale

Parvicardium ovale

American piddock
Petricola pholadiformis

Petricola pholadiformis

A razor shell
Phaxas pellucidus

Phaxas pellucidus

Peppery furrow shell
Scrobicularia plana

Scrobicularia plana

A bivalve mollusc
Spisula elliptica

Spisula elliptica

A surf clam
Spisula solida

Spisula solida

Atlantic surf clam
Spisula solidissima

Spisula solidissima

Chequered carpet shell
Ruditapes decussatus

Ruditapes decussatus

Manila clam
Ruditapes philippinarum

Ruditapes philippinarum

A bivalve mollusc
Tellimya ferruginosa

Tellimya ferruginosa

Northern hatchet shell
Thyasira gouldi

Thyasira gouldi

Oval venus
Timoclea ovata

Timoclea ovata

A bivalve mollusc
Tridonta montagui

Tridonta montagui

Pullet carpet shell
Venerupis senegalensis

Venerupis senegalensis

Warty venus
Venus verrucosa

Venus verrucosa

A bivalve
Circomphalus casina

Circomphalus casina

Myoida

White piddock
Barnea candida

Barnea candida

Basket shell
Corbula gibba

Corbula gibba

Wrinkled rock borer
Hiatella arctica

Hiatella arctica

Sand gaper
Mya arenaria

Mya arenaria

Blunt gaper
Mya truncata

Mya truncata

Common piddock
Pholas dactylus

Pholas dactylus

Great shipworm
Teredo navalis

Teredo navalis

Limoida

Gaping file shell
Limaria hians

Limaria hians

Pholadomyoida

A bivalve mollusc
Thracia convexa

Thracia convexa

A bivalve mollusc
Thracia villosiuscula

Thracia villosiuscula

Pterioida

Fan mussel
Atrina fragilis

Atrina fragilis

Nuculoida

A bivalve mollusc
Nucula nitidosa

Nucula nitidosa

A bivalve mollusc
Nucula sulcata

Nucula sulcata

Cuttlefish, nautilus, octopus & squid (Cephalopoda)

Sepiida

Elegant cuttlefish
Sepia elegans

Sepia elegans

Common cuttlefish
Sepia officinalis

Sepia officinalis

Pink cuttlefish
Sepia orbigniana

Sepia orbigniana

Sepiolida

Stout bobtail
Rossia macrosoma

Rossia macrosoma

Common bobtail
Sepietta oweniana

Sepietta oweniana

Little cuttlefish
Sepiola atlantica

Sepiola atlantica

Dwarf bobtail
Sepiola rondeletii

Sepiola rondeletii

Teuthida

Little squid
Alloteuthis media

Alloteuthis media

European common squid
Alloteuthis subulata

Alloteuthis subulata

Broadtail shortfin squid
Illex coindetii

Illex coindetii

Long finned squid
Loligo forbesi

Loligo forbesi

Common squid
Loligo vulgaris

Loligo vulgaris

Lesser flying squid
Todaropsis eblanae

Todaropsis eblanae

Octopoda

North Atlantic octopus
Bathypolypus arcticus

Bathypolypus arcticus

Curled octopus
Eledone cirrhosa

Eledone cirrhosa

Common octopus
Octopus vulgaris

Octopus vulgaris