MarLIN Gallery

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

Gibbula cineraria, the grey top shell. Copyright Sue Daly	Gibbula umbilicalis, flat top shell. Copyright Keith Hiscock	Helcion pellucidum on kelp blade. Copyright Marine Biological Association of the UK	Nucella lapillus with black and white stripes. Copyright Sue Daly
Collection of Littorina obtusata shells. Copyright Sue Daly	Three Littorina littorea on intertidal rock with limpets, barnacles and weed. Copyright Keith Hiscock	Osilinus lineatus on intertidal rock. Copyright Keith Hiscock	Mussel shells displayed on gravel. Copyright Sue Daly
Dogwhelk on rock. Photo taken underwater. Copyright Sue Daly	Line drawing of Alloteuthis media. Copyright FAO	Line drawing of Alloteuthis subulata. Copyright FAO	Line drawing of Bathypolypus arcticus. Copyright FAO
Line drawing of Eledone cirrhosa. Copyright FAO	Line drawing of Illex coindetii. Copyright FAO	Loligo forbesi. Copyright Marine Biological Association of the UK	Line drawing of Loligo forbesi. Copyright FAO
Line drawing of Loligo vulgaris. Copyright FAO	Octopus vulgaris. Copyright Marine Biological Association of the UK	Line drawing of Rossia macrosoma. Copyright FAO	Individual Sepiola atlantica on gravel. Copyright Paul Naylor
Line drawing of Sepiola atlantica. Copyright FAO	Line drawing of Sepia elegans. Copyright FAO	Two individuals hovering over the sea bed. Copyright Marine Biological Association of the UK	Two individuals. Copyright Marine Biological Association of the UK.
Individual burying in gravel. Copyright Paul Naylor	Side view of entire individual. Copyright Marine Biological Association of the UK	Line drawing of Sepia orbigniana. Copyright FAO	Line drawing of Sepietta oweniana. Copyright FAO
Line drawing of Sepiola rondeletii. Copyright FAO	Line drawing of Todaropsis eblanae. Copyright FAO	Line drawing of Truncatella subcylindrica. Copyright RSK Barnes	Adult Atrina fragilis embedded in sea bed. Copyright Sue Scott
A view of the upper (right) side of a native oyster attached to pebbles. Copyright Keith Hiscock	Caloria elegans from a rocky reef area, Co Antrim. Copyright Bernard Picton	Eledone cirrhosa Copyright Joint Nature Conservation Committee	Eledone cirrhosa, curled octopus. Copyright Joint Nature Conservation Committee
Greilada elegans on bryozoan. Copyright Keith Hiscock	Greilada elegans. Copyright Keith Hiscock	Tritonia nilsodhneri and eggs on the sea fan Eunicella verrucosa. Copyright Keith Hiscock	The banded chink snail Lacuna vincta on kelp. Copyright Marine Biological Association of the UK
Side view of Atrina fragilis in the seabed. Copyright Sue Scott	Atrina fragilis on the seabed. Copyright Sue Scott	Side view of Atrina fragilis on log showing scale. Copyright Sue Scott	Okenia elegans Copyright Paul Naylor
Three Cerastoderma glaucum with siphons extended. Copyright Dennis R. Seaward	Tortoiseshell limpet, Tectura testudinalis. Copyright Keith Hiscock	Six specimens of Caecum armoricum. Copyright Dennis R. Seaward	Post larval juvenile of Caecum armoricum. Whole animal and shell, showing protoconch and operculum. Copyright Nigel Charles
External view of Thyasira gouldi valve. Copyright National Museum Wales	One juvenile crawling shell and 5 adults of Truncatella subcylindrica. Also one shell of Paludinella litorina. Copyright Dennis R. Seaward	Two adult Truncatella subcylindrica, one crawling. Copyright Dennis R. Seaward	Tenellia adspersa Copyright Dennis R. Seaward
Front half of adult Caecum armoricum. Copyright Nigel Charles	Two specimens of Caecum armoricum. The smaller specimen has laid down a new septum preparatory to breaking off the empty part of the shell. Copyright Nigel Charles	Three live shells and one empty one of Paludinella littorina. Copyright Dennis R. Seaward	One animal crawling. Eyes showing in centre of lobed tentacles. Copyright Dennis R. Seaward
Two animals crawling on Zostera and Obelia. Copyright Dennis R. Seaward	Tenellia adspersa crawling on Ruppia with the mollusc Rissoa membranacea. Copyright Dennis R. Seaward	Common tortoiseshell limpet on stones at low water in Scotland. Copyright Keith Hiscock	Littorina obtusata. Copyright Sue Scott
Three Littorina littorea on rock under water at high tide. Copyright Keith Hiscock	Individual removed from burrow. Copyright Dennis R. Seaward	Museum specimens of the spiny cockle. Copyright Dennis R. Seaward	Aplysia punctata (left hand side) with Actinothoe sphyrodeta. Copyright Sue Scott
Facelina bostoniensis . Copyright Sue Scott	Facelina bostoniensis. Copyright Sue Scott	Coryphella gracilis with spawn. Copyright Sue Scott	Elysia viridis. Copyright Sue Scott
Elysia viridis. Copyright Sue Scott	Flabellina pellucida. Copyright Sue Scott	Close up of the tentacles of Limaria hians. Copyright Sue Scott	Limaria hians and nest. Copyright Sue Scott
Limaria hians. Copyright Sue Scott	Littorina saxatilis, rough periwinkles amongst barnacles, Semibalanus balanoides. Copyright Sue Scott	Dense clump of mussels with barnacles on individuals. Copyright Sue Scott	Dense covering of mussels on intertidal rocks. Copyright Sue Scott
Dense growth of young mussels with barnacles and two dog whelks. Copyright Sue Scott	Great scallop, Pecten maximus, and maerl. Copyright Sue Scott	Two Osilinus lineatus on rock. Copyright Keith Hiscock	Mytilus edulis, on a buoy line, feeding. Copyright Sue Scott
Great scallop ( Pecten maximus) on a gravel bank at the Manacles, southwest Cornwall. Copyright Robert Keen	Nucella lapillus with egg capsules. Copyright Keith Hiscock	The carnivorous snail Simnia patula. Copyright Keith Hiscock	The carnivorous snail Simnia patula with its eggs on its prey, Alcyonium digitatum. Copyright Keith Hiscock
Horse mussel bed with hydroids and red seaweed, Linga Sound, Shetland. Copyright Joint Nature Conservation Committee	Patella vulgata on rock. Copyright Keith Hiscock	A selection of adult Mya arenaria. Copyright Dr Matthias Strasser	Philine aperta on sediment surface. Copyright Keith Hiscock
Group of Philine aperta on the sediment surface. Copyright Keith Hiscock	Overhead shot of star shaped depressions left by siphons of Scrobicularia plana. Copyright Joint Nature Conservation Committee	A number of Scrobicularia plana being dug out of coarse sediment. Copyright Joint Nature Conservation Committee	A razor shell Pharus legumen. Copyright Keith Hiscock
Clump of mussels. Copyright Keith Hiscock	A selection of juvenile Mya arenaria about 2-5 mm in length. Copyright Dr Matthias Strasser	Characteristic siphon holes of Mya arenaria. Copyright Dr Matthias Strasser	Melarhaphe neritoides in high shore crevice. Copyright Keith Hiscock
Chain of Crepidula fornicata. Copyright Steve Trewhella	Buccinum undatum. Copyright Steve Trewhella	Buccinum undatum. Copyright Steve Trewhella	Alloteuthis subulata. Copyright Marine Biological Association of the UK
Side view of Alloteuthis subulata. Copyright Marine Biological Association of the UK	Front view of Alloteuthis subulata. Copyright Marine Biological Association of the UK	External view of Venerupis senegalensis valve. Copyright National Museum Wales	Mya arenaria close-up when open. Copyright Steve Trewhella
Mya arenaria close-up when open (side view). Copyright Steve Trewhella	Foot and underside of Patella ulyssiponensis. Copyright MarClim	Macoma balthica. Copyright Marine Biological Association of the UK	Specimen of Mya truncata. Copyright Tim Siferd
Tonicella marmorea Copyright Sue Scott	Shell of Tricolia pullus. Copyright Steve Trewhella	External view of Parvicardium ovale valve. Copyright National Museum Wales	Fabulina fabula. Copyright Peter Barfield
Tritonia nilsodhneri on Eunicella verrucosa. Copyright Keith Hiscock	Polycera faeroensis, two individuals seen at Lundy. Copyright Keith Hiscock	Dog whelks laying eggs between mussel beds. Copyright Keith Hiscock	The pearl top shell Margarites helicinus. Copyright Erling Svensen
Apertural view of Bittium reticulatum. Copyright National Museum Wales	Apertural view of Epitonium clathrus. Copyright National Museum Wales	Ocenebra erinacea with egg capsules. Copyright Keith Hiscock	Apertural view of Colus islandicus. Copyright National Museum Wales
Clump of horse mussels Modiolus modiolus on bedrock. Copyright Keith Hiscock	The variegated scallop Chlamys varia. Copyright Steve Trewhella	Bed of Crassostrea gigas in the Netherlands. Copyright Keith Hiscock	Corbula gibba. Copyright Dr Sebastian Holmes
Nucula nitidosa Copyright Dr Sebastian Holmes	Outer view of Haliotis tuberculata. Copyright National Museum Wales	External view of Tellimya ferruginosa valve. Copyright National Museum Wales	Littorina obtusata on seaweed. Copyright Steve Trewhella
The laver spire shell, Hydrobia ulvae. Copyright Steve Trewhella	The laver spire shell Hydrobia ulvae. Copyright Steve Trewhella	Distribution map for the razor shell Ensis siliqua. Copyright MarLIN	Distribution map for the razor shell Ensis arcuatus. Copyright MarLIN
Distribution map for Ensis ensis. Copyright MarLIN	Astarte sulcata. Copyright Dr Sebastian Holmes	External view of Spisula elliptica valve. Copyright National Museum Wales	Barnea candida in situ. Copyright National Museum Wales
The smooth Artemis Dosinia lupinus on a black background. Copyright Hilmar Hinz	Neptunea antiqua. Copyright SNH	Corbula gibba shell opened to show ligment and hinge teeth. Copyright Dr Sebastian Holmes	The Arctic cowrie Trivia arctica. Copyright Sue Scott
Calliostoma zizyphinum. Copyright Harvey Tyler-Walters	Group of Osilinus lineatus on emmersed mid shore rock. Copyright Harvey Tyler-Walters	External view of Lasaea adansoni valve. Copyright National Museum Wales	Painted top shell Copyright Paul Naylor
Painted top shell. Copyright Keith Hiscock	The great scallop in sediment. Copyright Keith Hiscock	External view of Petricola pholadiformis valve. Copyright National Museum Wales	The sea slug Tritonia nilsodhneri with its eggs. Copyright Keith Hiscock
Calliostoma zizyphinum with Corynactis viridis on the Manacles, southwest Cornwall. Copyright Robert Keen	Nassarius reticulatus with eggs at 40 m depth. Copyright Keith Hiscock	Ensis ensis, the razor shell. Copyright Keith Hiscock	The thick-lipped dog whelk Nassarius reticulatus. Copyright Keith Hiscock
Hiatella arctica. Copyright Keith Hiscock	Icelandic cyprine, Arctica islandica. Copyright Steve Trewhella	Siphons of Mya truncata visible on sediment surface at 19m off Qikiqtarjuag, Canada. Copyright Tim Siferd	View of top valve of Arctica islandica. Copyright Steve Trewhella
The variegated scallop, Chlamys varia. Copyright Steve Trewhella	Venus verrucosa Copyright Steve Trewhella	Berthella plumula. Copyright Steve Trewhella	Buccinum spp. egg mass washed ashore. Copyright Steve Trewhella
Phaxas pellucidus. Copyright Peter Barfield	External view of Thracia convexa valve. Copyright National Museum Wales	The whelk Buccinum undatum laying eggs, late December 2002. Copyright Keith Hiscock	Apertural view of Jujubinus striatus. Copyright National Museum Wales
Musculus discors living in bryozoan turf collected from dead Eunicella verrucosa. Copyright Keith Hiscock	Small Tritonia hombergi feeding on dead man's fingers Alcyonium digitatum. Copyright Keith Hiscock	Top view of Leptochiton scabridus. Copyright National Museum Wales	Group of horse mussels in sediment. Copyright Keith Hiscock
Margarites helicinus with eggs. Copyright Erling Svensen	Crassostrea gigas, Kingsand. Copyright Keith Hiscock	Close up view of aperture. Copyright Keith Hiscock	Hero formosa on sediment. Copyright Jim Anderson
Large specimen of Pholas dactylus from off Mumbles Head. Copyright Jon Moore	Calyptraea chinensis. Copyright Steve Trewhella	Acanthochitona fascicularis Copyright Steve Trewhella	Driftwood bored by the shipworm Teredo navalis. Copyright Steve Trewhella
Shell of Velutina velutina from Studland, Dorset. Copyright Steve Trewhella	The bearded mussel Modiolus barbatus. Copyright Steve Trewhella	Mysella bidentata. Copyright Peter Barfield	Shell of the dog cockle Glycymeris glycymeris. Copyright Jo Trout
Turritella communis on sediment. Copyright Keith Hiscock	Limacia clavigera. Copyright Jim Anderson	Onchidoris bilamellata. Copyright Jim Anderson	Onchidoris muricata. Copyright Jim Anderson
Palio nothus on the seabed. Copyright Ruth Memmott	Polycera quadrilineata. Copyright Jim Anderson	Two Turritella communis on sediment. Copyright Keith Hiscock	External view of Thracia villosiuscula valve. Copyright National Museum Wales
The celtic sea slug Onchidella celtica. Copyright Peter Barfield	Pecten maximus swimming. Copyright Keith Hiscock	Acanthodoris pilosa. Copyright Jim Anderson	Aeolidia papillosa. Copyright Anne Marie Power
Aequipecten opercularis on mixed substrata. Copyright Keith Hiscock	Chlamys varia. Copyright Keith Hiscock	External view of Chamelea gallina valve. Copyright National Museum Wales	External view of Dosinia exoleta valve. Copyright National Museum Wales
External view of Ruditapes decussatus valve. Copyright National Museum Wales	External view of Mercenaria mercenaria valve. Copyright National Museum Wales	External view of Ruditapes philippinarum valve. Copyright Terry Wimbleton	Hiatella arctica in burrow. Copyright Keith Hiscock
External view of Spisula solidissima valve. Copyright National Museum Wales	Chain of slipper limpets on the lower shore. Copyright Keith Hiscock	The sea lemon Archidoris pseudoargus in rockpool. Copyright Anne Marie Power	Native oyster Ostrea edulis exposed by the tide at Oreston Spit, Plym Estuary. Copyright Keith Hiscock
Native oyster Ostrea edulis in shallow water at Durgon, Itelford River, Cornwall. Copyright Keith Hiscock	Edible periwinkle Littorina littorea on sheltered vertical rock at Millport, Firth of Clyde. Copyright Keith Hiscock	The limpet Patella depressa. Copyright MarClim	The limpet Tectura testudinalis. Copyright MarClim
Shell of Cerastoderma edule opened to display hinge. Copyright Keith Hiscock	The common cockle Cerastoderma edule on mud surface. Copyright Keith Hiscock	Cerithiopsis tubercularis. Copyright Steve Trewhella	Lamellaria perspicua. Copyright Steve Trewhella
Ruditapes decussatus in aquarium with siphons extended. Copyright Crown copyright	Ruditapes decussatus spawning in aquarium. Copyright Crown copyright	Aporrhais pespelecani. Copyright Marine Biological Association of the UK	The sea hare Aplysia punctata on leaves of Zostera marina. Copyright Keith Hiscock
Nucula sulcata. Copyright Dr Sebastian Holmes	The surf clam Spisula solida. Copyright Bob Williams	Acanthodoris pilosa in laboratory. Copyright Jim Anderson	Acanthodoris pilosa on substratum. Copyright Jim Anderson
Limacia clavigera on ascidian siphon. Copyright Jim Anderson	Onchidoris bilamellata spawn. Copyright Jim Anderson	Dorsal view of Onchidoris muricata. Copyright Jim Anderson	Two Polycera quadrilineata feeding on Membranipora membranacea. Copyright Jim Anderson
The spiny cockle Acanthocardia aculeata on mixed sediment. Copyright Jim Anderson	Both valves of the dog cockle Glycymeris glycymeris. Copyright Jo Trout	Onchidoris spp. Copyright Marco Faasse	Dendronotus frondosus on kelp at Bach Island, Firth of Lorne on the west coast of Scotland. Copyright Jim Anderson
Facelina auriculata on Ulva lactuca. Copyright Judith Oakley	Pleurobranchus membranaceus at Lyme Bay. Copyright Mike Markey	Chlamys distorta Humpback Scallop, Oban. Copyright Steve Trewhella	External view of Circomphalus casina valve. Copyright National Museum Wales
The slit limpet Emarginula fissura. Copyright Bryan Wasson	Atrina fragilis removed from soft mud in Plymouth Sound. Copyright Keith Hiscock	Adapertural (back) view of Euspira catena. Copyright National Museum Wales	The marbled crenella Modiolarca tumida. Copyright Bryan Wasson
Adapertural (back) view of Euspira pulchella. Copyright National Museum Wales	Grouping of Rissoa parva on red seaweed. Copyright Steve Trewhella	Atrina fragilis in soft mud in Plymouth Sound. Copyright Keith Hiscock	Aeolidiella alderi Copyright Judith Oakley
Berthella plumula exposed under boulder. Copyright Steve Trewhella	Aplysia punctata with string of pink eggs. Copyright Judith Oakley	Acanthochitona crinita in a rock pool. Copyright Judith Oakley	Trivia monacha at Scapa Flow, Orkneys. Copyright Robert Keen
The sea slug Armina loveni. Copyright Jim Anderson	Tritonia hombergi with eggs. Copyright Sue Scott	Abra alba. Copyright Peter Barfield	Aeolidiella sanguinea. Copyright Marco Faasse
The rare sea slug Trapania maculata. Copyright Rob Spray and Dawn Watson	Berthella plumula. Copyright Steve Trewhella	The spotted cowrie Trivia monacha. Copyright Steve Trewhella	Close up of the Great Scallop Pecten maximus showing the mantle. Copyright Keith Hiscock
Irus irus in rock cavity. Copyright Steve Trewhella	Tonicella marmorea Copyright Paul Naylor	Tellina tennis Copyright Paul Naylor	Tellina tenuis Copyright Paul Naylor
Acesta excavata. Copyright Erling Svensen	Arctic cowrie. Copyright Judith Oakley	Littorina obtusata. Copyright Peter Barfield	Myrtea spinifera. Copyright Peter Barfield
Crassostrea gigas at Batten Bay, Plymouth Sound. Copyright Guy Baker	A pair of Aporrhais pespelecani Copyright Marine Biological Association of the UK	Crassostrea gigas at Firestone Bay, Plymouth Sound. Copyright Jack Sewell	Shell of Chlamys varia. Copyright Jack Sewell
The sea lemon Archidoris pseudoargus. Copyright Jack Sewell	Mating sea lemons. Copyright Judith Oakley	Spawn of Aeolidia papillosa. Copyright Judith Oakley	Flat, vase-shaped egg capsules of Nassarius reticulatus. Copyright Judith Oakley
The violet snail Janthina janthina and bubble raft. Copyright Steve Trewhella	Janthina janthina. Copyright Steve Trewhella	Tritonia hombergi. Copyright Steve Trewhella	A pair of mating Onchidella celtica. Copyright Peter Barfield
Eggs of common cuttlefish on Sargassum muticum. Copyright Judith Oakley	Eggs of the common squid washed up on the shore. Copyright Judith Oakley	Rostanga rubra. Copyright Judith Oakley	Two specimens of Jorunna tomentosa beneath rock overhang. Copyright Judith Oakley
Geitodoris planata. Copyright Judith Oakley	Runcina coronata in a rockpool. Copyright Judith Oakley	Underside of Ocenebra erinacea. Copyright Judith Oakley	Aequipecten opercularis showing mantle and eyes. Copyright Judith Oakley
Aeolidiella alderi. Copyright Steve Trewhella	Littorina mariae. Copyright Steve Trewhella	Spawn of Jorunna tomentosa. Copyright Judith Oakley	A white colour morph of Eubranchia farrani. Copyright Judith Oakley
Orange and white colour morph of Eubranchus farrani on Obelia sp. attached to kelp. Copyright Judith Oakley	Eubranchus farrani orange and white colour morph on sugar kelp. Copyright Judith Oakley	Eubranchus farrani pale orange/pink colour morph with Obelia sp. on kelp frond. Copyright Judith Oakley	Closer view of Facelina auriculata on Ulva lactuca. Copyright Judith Oakley
A pair of Eubranchus farrani with hydroid and bryozoan on Ulva lactuca. Copyright Judith Oakley	Spawn of Eubranchus farrani. Copyright Judith Oakley	Spawn of Facelina auriculata. Copyright Judith Oakley	Mud snails Hydrobia sp. on mud surface. Copyright Sue Scott
Mud snails Hydrobia sp. on sediment surface. Copyright Sue Scott	Coryphella browni. Copyright Greg Brown	Individual Crepidula fornicata on pebble intertidally Copyright Jack Sewell	Onchidella celtica. Copyright Steve Trewhella
External view of Phaxas pellucidus valve. Copyright National Museum Wales	External view of Angulus tenuis valve. Copyright National Museum Wales	Internal view of Angulus tenuis valves. Copyright National Museum Wales	Apical view of Barnea candida protoplax. Copyright National Museum Wales
Internal view of Barnea candida valve. Copyright National Museum Wales	Apertural view of Bittium simplex. Copyright National Museum Wales	External view of Callista chione valve. Copyright National Museum Wales	Internal view of Callista chione valve. Copyright National Museum Wales
Side profile of Callista chione. Copyright National Museum Wales	Internal view of Chamelea gallina valve. Copyright National Museum Wales	Internal view of Circomphalus casina valve. Copyright National Museum Wales	Internal view of Circomphalus casina valve. Copyright National Museum Wales
Apertural view of Circulus striatus. Copyright National Museum Wales	Umbilical view of Circulus striatus. Copyright National Museum Wales	Apical view of Circulus striatus. Copyright National Museum Wales	External view of Clausinella fasciata valve. Copyright National Museum Wales
Internal view of Clausinella fasciata valve. Copyright National Museum Wales	Side profile of Clausinella fasciata. Copyright National Museum Wales	Internal view of Dosinia exoleta valve. Copyright National Museum Wales	Apertural view of Euspira catena. Copyright National Museum Wales
Inner view of Haliotis tuberculata. Copyright National Museum Wales	Apertural view of Jordaniella truncatula. Copyright National Museum Wales	Internal view of Mercenaria mercenaria valve. Copyright National Museum Wales	Side view of Mercenaria mercenaria lunule. Copyright National Museum Wales
Petricola pholadiformis in situ. Copyright National Museum Wales	Internal view of Petricola pholadiformis valve. Copyright National Museum Wales	Apertural view of Euspira pulchella. Copyright National Museum Wales	Internal view of Spisula elliptica valve. Copyright National Museum Wales
Internal view of Spisula solidissima valve. Copyright National Museum Wales	Internal view of Ruditapes decussatus valve. Copyright National Museum Wales	Internal view of Ruditapes decussatus valve. Copyright National Museum Wales	Side profile of lunule and ligament of Ruditapes philippinarum. Copyright Terry Wimbleton
Internal view of Tellimya ferruginosa valves. Copyright National Museum Wales	Internal view of Venerupis senegalensis valve. Copyright National Museum Wales	Doris sticta. Copyright Paul Newland	Janolus cristatus. Copyright Judith Oakley
Janolus cristatus on a pontoon. Copyright Judith Oakley	Close up of Janolus cristatus coruncle. Copyright Judith Oakley	Pleurobranchus membranaceus with eggs, Lyme Bay. Copyright Mike Markey	The oval venus, Timoclea ovata. Copyright Peter Barfield
Littorina obtusata on Fucus sp. Copyright Charlotte Marshall	Archidoris pseudoargus feeding on breadcrumb sponge. Copyright Peter Barfield	The egg ribbon of the sea lemon Archidoris pseudoargus. Copyright Peter Barfield	Common keyhole limpet Diodora graeca. Copyright Judith Oakley
Egg collar of the necklace shell Euspira catena. Another species (probably the thick-lipped whelk) has attached its own eggs to the underside of the collar. Copyright Judith Oakley	The common piddock Pholas dactylus, South Wales. Copyright Judith Oakley	The shell of the sea slug Akera bullata. Copyright Steve Trewhella	Grey top shell and barnacles. Copyright Steve Trewhella
The flat top shell Gibbula umbilicalis. Copyright Steve Trewhella	Group of spotted cowries (Trivia monacha) on sponge. Copyright Steve Trewhella	Sepiola atlantica, the little cuttlefish, swimming. Copyright Steve Trewhella	The bivalve Abra prismatica. Copyright www.seasurvey.co.uk
Abra nitida. Copyright Hilmar Hinz	Acteon tornatilis shell, approximately 1.5 cm. Copyright Hilmar Hinz	Eubranchus farrani orange and white colour morph. Copyright Judith Oakley	Facelina auriculata. Copyright Judith Oakley
Jorunna tomentosa, on Ulva lactuca on a marine pontoon. Copyright Judith Oakley	Goniodoris nodosa, found attached to sugar kelp on a pontoon. Copyright Judith Oakley	Crassostrea gigas growing on the side of a marina pontoon. Copyright Judith Oakley	Crassostrea gigas at Jennycliff Bay. Copyright Judith Oakley
Group of Nucella lapillus and eggs on an overhang (the photograph is upside-down to aid identification). Copyright Judith Oakley	Single Crepidula fornicata on rock overhang. Copyright Judith Oakley	Barnea candida valve. Copyright Judith Oakley	Pinna nobilis, a fan mussel. Copyright Judith Oakley
The grey sea slug Aeolidia papillosa. Copyright Judith Oakley	The dog whelk Nucella lapillus, highlighting colour variation. Copyright Judith Oakley	Elysia viridis with egg ribbon on Codium spp. Copyright Judith Oakley	Elysia viridis crawling in a rockpool; note the characteristic bright green-blue spots. Copyright Judith Oakley
The razor shell Ensis siliqua. Copyright Paul Newland	The razor shell Ensis siliqua showing almost straight sided valves. Copyright Paul Newland	The siphons of a razor shell. Copyright Paul Newland	Alder's necklace shell Euspira pulchella with mantle skirt, foot and tentacles clearly visible. Copyright Paul Newland
Buccinum undatum crawling on the seabed highlighting shape of foot, tentacles and siphon. Note also the Crepidula fornicata on the shell. Copyright Paul Newland	Two Buccinum undatum individuals in what appears to be a mating position. Copyright Paul Newland	Crepidula fornicata growing on the shell of an edible crab illustrating diversity of substrata on which it can grow. Copyright Peter Watkinson	Diaphorodoris luteocincta at 36 metres on the wreck of the King Cadwallan, Hard Lewis Rocks, Isles of Scilly. Copyright Robert Keen
Coryphella lineata on feeding on Tubularia indivisa at Firestone Bay, Plymouth Sound. Copyright Keith Hiscock	Coryphella browni in Lyme Bay, Devon. Copyright Robert Keen	Geitodoris planata at Scapa Flow, Orkneys. Copyright Robert Keen	Coryphella browni at the Manacles, southwest Cornwall. Copyright Robert Keen
Coryphella browni on the City of Ghent, Manacles, southwest Cornwall. Copyright Robert Keen	Trivia monacha at Scapa Flow, Orkneys. Copyright Robert Keen	Trivia arctica at Firestone Bay, Plymouth Sound. Copyright Keith Hiscock	Trivia monacha on the Isles of Scilly. Copyright Robert Keen
Rostanga rubra at Scapa Flow, Orkneys. Copyright Robert Keen	A group of Abra alba. Copyright www.seasurvey.co.uk	Abra nitida. Copyright www.seasurvey.co.uk	Group of Buccinum undatum illustrating shape of foot, siphon and operculum. Copyright www.seasurvey.co.uk
Buccinum undatum egg mass. Copyright Paul Newland	Calliostoma zizyphinum in Lyme Bay, Devon. Copyright Robert Keen	Cadlina laevis with encrusting red algae at Doune, Scotland. Copyright Fiona Crouch	Coryphella browni on Tubularia spp. in the Channel Isles. Copyright Sue Daly
Crimora papillata in the Channel Isles. Copyright Sue Daly	Haliotis tuberculata in the Channel Isles. Copyright Sue Daly	An empty Haliotis tuberculata shell in the Channel Isles. Copyright Sue Daly	Aplysia punctata on sandy gravel in the Channel Isles. Copyright Sue Daly
Simnia patula on Eunicella verrucosa at Lundy. Copyright Keith Hiscock	The sea slug Adalaria proxima. Copyright Jim Anderson	Dendronotus frondosus from the north coast of Bernera Island, Lismore on the west coast of Scotland. Copyright Jim Anderson	Aplysia punctata in a rockpool at Batten Bay, Plymouth. Copyright Jack Sewell
Aplysia punctata showing eye. Copyright Jack Sewell	Chlamys varia valve. Copyright www.seasurvey.co.uk	The Faroe sunset shell Gari fervensis. Copyright www.seasurvey.co.uk	Coryphella browni surrounded by jewel anemones. Copyright Paul Newland
The common / edible winkle Littorina littorea. Copyright Steve Trewhella	Common flat periwinkle on Fucus serratus. Copyright Steve Trewhella	The pullet carpet shell. Copyright Steve Trewhella	Venerupis senegalensis partly burried in muddy gravel. Copyright Steve Trewhella
Aeolidiella alderi showing rhinophore and tentacle detail. Copyright Steve Trewhella	Pair of blue-rayed limpets on kelp. Copyright Steve Trewhella	Atrina fragilis at low tide, Salcombe. Copyright Steve Trewhella	The 'toothed' topshell. Copyright Steve Trewhella
Small periwinkles. Copyright Steve Trewhella	Polinices polianus. Copyright Steve Trewhella	Turritella communis shell on seabed. Copyright Steve Trewhella	Pink cuttlefish bone. Copyright Steve Trewhella
Elegant cuttlefish bones. Copyright Steve Trewhella	Polycera faeroensis with distinctive yellow markings. Copyright Steve Trewhella	The translucent quality of a Polycera faeroensis. Copyright Steve Trewhella	Facelina auriculata at Mayflower Marina. Copyright Judith Oakley
A Facelina auriculata with long oral tentacles. Copyright Judith Oakley	Jorunna tomentosa on Ulva lactuca. Copyright Judith Oakley	Trivia monacha with distinctive yellow mantle. Copyright MarLIN	Atrina fragilis in muddy gravel, Ireland. Copyright Erling Svensen
Alloteuthis subulata egg mass. Copyright Paul Newland	Open empty shell of Donax vittatus. Copyright Paul Naylor	Astarte elliptica Copyright Dr Sebastian Holmes	Astarte montagui. Copyright Dr Sebastian Holmes
Corbula gibba. Copyright Dr Sebastian Holmes	Nucula minuta. Copyright Dr Sebastian Holmes	Nucula nucleus. Copyright Dr Sebastian Holmes	Nucula tumidula. Copyright Dr Sebastian Holmes
Antalis spp. Copyright Dr Sebastian Holmes	The topshell Gibbula umbilicalis amongst dog whelks. Copyright Peter Barfield	The topshell Gibbula umbilicalis upturned on a rock. Copyright Peter Barfield	The topshell Gibbula umbilicalis upturned on a rock showing its operculum. Copyright Peter Barfield
Helcion pellucidum on a blade of kelp. Copyright Peter Barfield	Lepidochitona cinerea. Copyright Peter Barfield	Osilinus lineatus on a barnacle covered rock. Copyright Peter Barfield	Osilinus lineatus upturned on a rock. Copyright Peter Barfield
Otina ovata on a rock covered by the barnacle Semibalanus balanoides. Copyright Peter Barfield	A gathering of Patella vulgata. Copyright Peter Barfield	Trivia monacha grouped together in a crevice. Copyright Peter Barfield	Aporrhais pespelecani on a green background. Copyright Hilmar Hinz
Arctica islandica on a black background. Copyright Hilmar Hinz	Astarte sulcata on a green background. Copyright Hilmar Hinz	Chamelea gallina on a black background. Copyright Hilmar Hinz	Corbula gibba on a black background. Copyright Hilmar Hinz
Shell of Cylichna cylindracea on a black background. Copyright Hilmar Hinz	Fabulina fabula on a black background. Copyright Hilmar Hinz	Hydrobia ulvae on a black background. Copyright Hilmar Hinz	Laevicardium crassum on a black background. Copyright Hilmar Hinz
Mysella bidentata on a black background. Copyright Hilmar Hinz	Nucula nitidosa on a black background. Copyright Hilmar Hinz	Oenopota turricula on a black background. Copyright Hilmar Hinz	Euspira pulchella on a black background. Copyright Hilmar Hinz
Polycera quadrilineata on a black background. Copyright Hilmar Hinz	Close up of the head of Rossia macrosoma. Copyright Hilmar Hinz	Close up of the head and tentacles of Rossia macrosoma. Copyright Hilmar Hinz	Rossia macrosoma on a black background. Copyright Hilmar Hinz
Sepiola atlantica on a green background. Copyright Hilmar Hinz	Head region of Sepiola atlantica. Copyright Hilmar Hinz	Highly pigmented Sepiola atlantica. Copyright Hilmar Hinz	Spisula subtruncata on a black background. Copyright Hilmar Hinz
Tellimya ferruginosa on a black background. Copyright Hilmar Hinz	Thyasira flexuosa on a black background. Copyright Hilmar Hinz	Venus verrucosa in a laboratory. Copyright Hilmar Hinz	Eledone cirrhosa juvenile. Copyright Hilmar Hinz
Pair of Euspira pulchella. Copyright Hilmar Hinz	Phaxas pellucidus on a black background. Copyright Hilmar Hinz	Tritonia hombergi amongst brittle stars. Copyright Paul Naylor	Acanthodoris pilosa in the Scilly Isles. Copyright Robert Keen
Close up view of Acanthodoris pilosa. Copyright Robert Keen	Cadlina laevis in the Scilly Isles. Copyright Robert Keen	Pair of Diaphorodoris luteocincta. Copyright Robert Keen	Bright pink Flabellina pedata. Copyright Robert Keen
Tritonia nilsodhneri on a sea fan. Copyright Robert keen	Close up view of Tritonia nilsodhneri on a sea fan. Copyright Robert Keen	Close up view of Pecten maximus. Copyright Steve Trewhella	Aporrhais pespelecani shell lying on some sand. Copyright Keith Hiscock
Crassostrea gigas on a dark, barnacle covered rock. Copyright Keith Hiscock	Crepidula fornicata at Oreston Spit. Copyright Keith Hiscock	Dark eggs of Sepia officinalis. Copyright Keith Hiscock	Mottled Eledone cirrhosa near the seabed. Copyright Keith Hiscock
Dirty Gibbula magus on the seabed. Copyright Keith Hiscock	Helcion pellucidum on Laminaria ochroleuca. Copyright Keith Hiscock	Limaria hians hidden within a nest. Copyright Keith Hiscock	Littorina littorea in a rock crevice. Copyright Keith Hiscock
Young Littorina obtusata with a distinctly banded shell. Copyright Keith Hiscock	Mytilus edulis covered in barnacles - close up. Copyright Keith Hiscock	Mytilus edulis covered in barnacles. Copyright Keith Hiscock	Bright pink Nassarius incrassatus. Copyright Keith Hiscock
Four brownish Nassarius incrassatus individuals. Copyright Keith Hiscock	Pecten maximus shells. Copyright Keith Hiscock	Pecten maximus shells. Copyright Keith Hiscock	Simnia patula on Alcyonium digitatum. Copyright Keith Hiscock
Tectura testudinalis on a rock. Copyright Keith Hiscock	Tectura testudinalis on a barnacle covered rock. Copyright Keith Hiscock	Turritella communis shell lying in sand. Copyright Keith Hiscock	Lone Calliostoma zizyphinum at Firestone. Copyright Keith Hiscock
Lone Calliostoma zizyphinum at Lundy. Copyright Keith Hiscock	Trivia arctica in the intertidal. Copyright Keith Hiscock	Osilinus lineatus on a rock. Copyright Keith Hiscock	Helcion pellucidum on some kelp. Copyright Keith Hiscock
Multiple Glycymeris glycymeris shells on the seabed. Copyright Keith Hiscock	Tritonia hombergi at Morris Rogue reef near Torbay, at 12 m depth. Copyright Paul Newland	Tritonia hombergi at Tucker Rock near Torbay, at 13 m depth. Copyright Paul Newland	Sea slug egg mass, probably of Tritonia hombergi. Copyright Paul Newland
Curled up Palio nothus. Copyright Ruth Memmott	Adult Alloteuthis subulata in a laboratory tank. Copyright John Rundle	Juvenile Alloteuthis subulata in a laboratory tank. Copyright John Rundle	Alloteuthis subulata eggs in a laboratory tank. Copyright John Rundle
Adult Allotheuthis sp. . Copyright John Rundle	Eledone cirrhosa scrambling up a rock in a laboratory. Copyright John Rundle	Eledone cirrhosa against the glass of a laboratory tank. Copyright John Rundle	Newly born Eledone cirrhosa. Copyright John Rundle
Sepia officinalis squirting ink. Copyright John Rundle	Sepia officinalis with its eggs. Copyright John Rundle	Female Sepia officinalis in a laboratory. Copyright John Rundle	Sepia officinalis juveniles bred in a laboratory. Copyright John Rundle
Head of Sepia officinalis with its eggs. Copyright John Rundle	Detached eggs of Sepia officinalis at different growth stages. Copyright John Rundle	Eggs of Loligo vulgaris in a laboratory. Copyright John Rundle	Aplysia punctata in a laboratory. Copyright John Rundle
Aplysia punctata eggs in a laboratory. Copyright John Rundle	Archidoris pseudoargus eggs in a laboratory tank. Copyright John Rundle	Close up view of Archidoris pseudoargus eggs in a laboratory tank. Copyright John Rundle	Yellow eggs of Archidoris pseudoargus. Copyright Fiona Crouch
Lemon-peel like eggs of Archidoris pseudoargus. Copyright Fiona Crouch	Coryphella browni in the Scilly Isles. Copyright Fiona Crouch	Close up view of Coryphella browni. Copyright Fiona Crouch	Coryphella browni swimming up from the seabed. Copyright Fiona Crouch
Multiple Coryphella browni. Copyright Fiona Crouch	Eubranchus farrani against a black background. Copyright Fiona Crouch	Helcion pellucidum in Doune. Copyright Fiona Crouch	Mating couple of Polycera faeroensis. Copyright Fiona Crouch
Polycera quadrilineata against a black background. Copyright Fiona Crouch	Sepia officinalis lying on a cobble seabed. Copyright Fiona Crouch	Pair of Sepia officinalis hovering over the seabed. Copyright Fiona Crouch	Simnia patula on its prey - close up view. Copyright Fiona Crouch
Simnia patula on its prey. Copyright Fiona Crouch	Pecten maximus in Doune. Copyright Fiona Crouch	An orange Archidoris pseudoargus specimen. Copyright Judith Oakley	A pale Archidoris pseudoargus at low tide. Copyright Judith Oakley
Acteon tornatilis on Aberavon beach. Copyright Judith Oakley	Acteon tornatilis and burrow on Aberavon beach. Copyright Judith Oakley	Aplysia punctata eggs on Dilsea carnosa. Copyright Judith Oakley	Aplysia punctata under a boulder. Copyright Judith Oakley
Calliostoma zizyphinum on a rock amongst barnacles and limpets. Copyright Judith Oakley	Crassostrea gigas on open rock. Copyright Judith Oakley	Diodora graeca feeding on a sponge on the side of a rock. Copyright Judith Oakley	Four Helcion pellucidum individuals on kelp. Copyright Judith Oakley
Limacia clavigera in a rockpool. Copyright Judith Oakley	Trivia monacha in a rockpool. Copyright Judith Oakley	Cerastoderma edule on a black background. Copyright Judith Oakley	Ensis siliqua shell on a dark background. Copyright Judith Oakley
Phaxas pellucidus lying on top of a sandy shore. Copyright Judith Oakley	Tip of Phaxas pellucidus showing out of its burrow. Copyright Judith Oakley	Phaxas pellucidus protruding from its burrow. Copyright Judith Oakley	Underside of Gibbula umbilicalis showing the operculum. Copyright Judith Oakley
Three mature Gibbula umbilicalis individuals. Copyright Judith Oakley	Lone Gibbula umbilicalis on a rock. Copyright Judith Oakley	Varying forms of Gibbula umbilicalis - view 1. Copyright Judith Oakley	Varying forms of Gibbula umbilicalis - view 2. Copyright Judith Oakley
Underside of Haliotis tuberculata shell. Copyright Judith Oakley	Helcion pellucidum on kelp showing its grazing trails. Copyright Judith Oakley	Helcion pellucidum on some damaged kelp. Copyright Judith Oakley	Lepidochitona cinerea on a rocky shore. Copyright Judith Oakley
Littorina littorea showing its withdrawn operculum. Copyright Judith Oakley	Eggs of Littorina obtusata. Copyright Judith Oakley	Lone Littorina saxatilis individual on a boulder. Copyright Judith Oakley	Lone upturned Littorina saxatilis individual on a boulder Copyright Judith Oakley
Littorina saxatilis individuals in the gap between two rocks. Copyright Judith Oakley	Bright orange Nucella lapilus. Copyright Judith Oakley	Close up view of Nucella lapilus and their eggs. Copyright Judith Oakley	Nucella lapilus under an overhang. Copyright Judith Oakley
Nucella lapilus on a rock. Copyright Judith Oakley	Brown and white striped juvenile Nucella lapilus. Copyright Judith Oakley	Osilinus lineatus on a barnacle covered rock. Copyright Judith Oakley	Dull-coloured Osilinus lineatus on a rocky shore. Copyright Judith Oakley
Patella depressa with a greenish tint. Copyright Judith Oakley	Sepia officinalis bone. Copyright Judith Oakley	Turritella communis shell on a black background. Copyright Judith Oakley	Tonicella rubra on a rocky shore. Copyright Judith Oakley
Patella vulgata showing its muscular foot while being grasped by a dog whelk. Copyright Judith Oakley	Long dead Aequipecten opercularis shell viewed from outside. Copyright Judith Oakley	Long dead Aequipecten opercularis shell viewed from inside. Copyright Judith Oakley	Buccinum undatum shell against a blue background. Copyright Judith Oakley
Lone Littorina littorea viewed from above. Copyright Judith Oakley	Four Patella vulgata individuals. Copyright Judith Oakley	Tellimya ferruginosa in a laboratory. Copyright Judith Oakley	Hanging eggs of Loligo spp.. Copyright Paul Newland
Acanthochitona fascicularis on an intertidal rock. Copyright Steve Trewhella	Aeolidia papillosa and its egg mass. Copyright Steve Trewhella	Bittium reticulatum shells on the seashore. Copyright Steve Trewhella	Lone Cingula trifasciata on the seashore. Copyright Steve Trewhella
Brown nudibranch Hancockia uncinata. Copyright Steve Trewhella	White shell Janthina pallida on a sandy substrate. Copyright Steve Trewhella	Underside of empty Janthina pallida shell. Copyright Steve Trewhella	Lamellaria perspicua left exposed as the tide ebbs. Copyright Steve Trewhella
Auriculinella bidentata grazing at low tide. Copyright Steve Trewhella	Dense group of Mytilus edulis in the sunlight. Copyright Steve Trewhella	Paludinella littorina on exposed red seaweed. Copyright Steve Trewhella	The buoyancy organ of Spirula spirula. Copyright Steve Trewhella
Close up view of Truncatella subcylindrica shell on a rocky shore. Copyright Steve Trewhella	Velutina velutina shell on a sandy substrate. Copyright Steve Trewhella	Underneath of an empty Velutina velutina shell. Copyright Steve Trewhella	A mating chain of Aplysia punctata in 14°C water. Copyright Paul Newland
Egg mass from Aplysia punctata in 14°C water. Copyright Paul Newland	An active sea slug, Berthella plumula. Copyright Holly Latham	Empty shell of the cowrie Trivia monacha. Copyright Holly Latham	Sea slug Tritonia nilsodhneri on sea fan Eunicella verrucosa. Copyright Paul Newland
Closeup of Polycera faeroensis. Copyright Paul Newland	The sea slug Acanthodoris pilosa. Copyright Paul Newland	The lobe shell Philine aperta in sandy substrate. Copyright Paul Newland	The lobe shell Philine aperta, partly buried in sand. Copyright Paul Newland
Lacuna vincta Copyright Steve Trewella	Lacuna vincta Copyright Steve Trewella	Upper shell of saddle oyster found at low tide. Copyright David Fenwick	Intertidal saddle oyster Copyright David Fenwick
Interior of saddle oyster shell halves Copyright David Fenwick	Chinamans hat snail attached to intertidal vegetation Copyright David Fenwick	Spire of Chinamans hat shell, found on beach Copyright David Fenwick	Aperture of Chinamans hat shell, found on beach Copyright David Fenwick
An intertidal feeding Cerithiopsis tubercularis Copyright David Fenwick	An intertidal feeding Cerithiopsis tubercularis Copyright David Fenwick	Outer left and right shell halves of the Humpback scallop Copyright David Fenwick	Outer and inner surfaces of both shell halves of Humpback scallop Copyright David Fenwick
Shell half of humpback scallop on beach Copyright David Fenwick	Shell half of humpback scallop Copyright David Fenwick	Assortment of humpback scallop shells found on a beach Copyright David Fenwick	Shell half of the banded wedge shell Copyright David Fenwick
Assorted colours and shapes of banded wedge shells Copyright David Fenwick	Inside of shell half of the banded wedge shell Copyright David Fenwick	Shell half of the banded wedge shell Copyright David Fenwick	Small periwinkles in a crevice on a rocky intertidal shore Copyright David Fenwick
Small periwinkles in a crevice on a rocky intertidal shore Copyright David Fenwick	A small periwinkle on a rocky intertidal shore Copyright David Fenwick	A small periwinkle on a rocky intertidal shore Copyright David Fenwick	The aperture and foot of a small periwinkle on a rocky intertidal shore Copyright David Fenwick
The bearded horse mussel on a rocky intertidal shore Copyright David Fenwick	Netted dog whelk on intertidal rock Copyright David Fenwick	Shell of the netted dog whelk Copyright David Fenwick	Aperture of the netted dog whelk Copyright David Fenwick
Shell of the netted dog whelk Copyright David Fenwick	Egg cases of netted dog whelk on intertidal rock Copyright David Fenwick	Egg case of netted dog whelk showing individual eggs inside Copyright David Fenwick	Live oyster drill Copyright David Fenwick
Live oyster drill Copyright David Fenwick	Two oyster drills with cluster of egg sacs Copyright David Fenwick	Egg sacs containing eggs of oyster drills Copyright David Fenwick	Aperture and ventral side of oyster drill shell Copyright David Fenwick
Right side of oyster drill shell Copyright David Fenwick	Shell of the china limpet on rocky shore Copyright David Fenwick	Inside of china limpet shell with animal removed Copyright David Fenwick	Inside of china limpet shell showing foot and mouth Copyright David Fenwick
Barnacle-covered shell of the china limpet on rocky shore Copyright David Fenwick	Aperture and spire of the common spire shell Copyright David Fenwick	Right side of common spire shell Copyright David Fenwick	One valve of the peppery furrow shell Copyright David Fenwick
Interior of one valve of the peppery furrow shell Copyright David Fenwick	Closeup of the hinge of one valve of the peppery furrow shell Copyright David Fenwick	Three pheasant shells, showing diversity in colour Copyright David Fenwick	Aperture and ventral side of pheasant shell Copyright David Fenwick
Right side of pheasant shell Copyright David Fenwick	The saddle oyster Anomia ephippium, showing the mantle edge of the left valve. Copyright Paula Lightfoot	The saddle oyster Anomia ephippium, showing the mantle edge of the left valve. Copyright Paula Lightfoot	The nudibranch Ancula gibbosa, with dorsal gills. Copyright Paula Lightfoot
Anterior view of Ancula gibbosa, with dorsal gill tuft. Copyright Paula Lightfoot	Dorsal surface of Ancula gibbosa, with anterior rhinophores visible on the left. Copyright Paula Lightfoot	A swarm of Netted dog whelks feeding on a dead spider crab. Copyright Paul Newland	A mobile Netted dog whelk displaying siphon and tentacles. Copyright Paul Newland
Facelina bostoniensis in a shallow pool. Copyright Jenni Kakkonen	Onchidoris bilamellata in fucoid zone. Copyright Jenni Kakkonen	Akera bullata attached to Zostera stem Copyright Steve Trewhella	Aeolidia papillosa Copyright Steve Trewhella
Macro image of the Coryphella browni nudibranch. Copyright Harriet Salomonsen	A Coryphella browni nudibranch on a rock. Copyright Bryan Harrison	A macro image of Aeolidia papillosa at Wembury pools Copyright Judith Oakley	A front view of the yellow skirt slug Copyright Keith Hiscock
Crimora papillata on an encrusting sponge Copyright Sue Daly	Doris sticta on the sea floor Copyright Sue Daly	Aplysia punctata rearing up from the seabed. Copyright Sue Daly	Haliotis tuberculata Copyright Sue Daly
Facelina auriculata on Laminaria. Copyright Fiona Crouch	Polycera faeroensis on red algae Copyright Sue Daly	Tectura testudinalis Copyright Fiona Crouch	Onchidella celtica Copyright Fiona Crouch
Onchidella celtica besides a limpet and barnacles. Copyright Fiona Crouch	Tritonia hombergi on rocky substrate. Copyright Fiona Crouch	Macro image of Acanthochitona crinita. Copyright Jack Sewell	A Cuthona nana sea slug feeding on hydroids. Copyright Steve Trewhella
A hiding cuttlefish. Copyright Steve Trewhella	Cingula triasciata on the sea bed. Copyright Steve Trewhella	Two Sagartiogeton undatus anemones adjacent to bivalve siphons. Copyright Paul Newland	Two Sagartiogeton undatus anemones adjacent to bivalve siphons. Copyright Paul Newland
A feeding Janolus cristatus sea slug. Copyright Paul Newland	Detail of head and rhinophores of Aeolidia papillosa. Copyright Tabitha Pearman	A group of Onchidoris bilamellata. Copyright Paul Newland	Onchidoris bilamellata on muddy silt substratum. Copyright Paul Newland
An Onchidoris bilamellata aggregation. Copyright Gordon Lang	An Onchidoris bilamellata aggregation. Copyright Gordon Lang	A resting queen scallop. Copyright Gordon Lang	A resting queen scallop. Copyright Gordon Lang
A group of black-lined periwinkles (Littorina saxatalis var. nigrolineata]. Copyright Steve Trewhella	A common cuttlefish in mid-water. Copyright Steve Trewhella	Berthella plumula on Spirorbis covered rock. Copyright Tabitha Pearman	Berthella plumula. Copyright Tabitha Pearman
An orange-clubbed sea slug. Copyright Kristie Wilkinson	Two Cuthona concina sea slugs. Copyright Paula Lightfoot	Archidoris pseudoargus Copyright Paul Newland	Well camouflaged juvenile cuttlefish (Sepia officinalis) Copyright Steve Trewhella
Nassarius reticulatus on gravel. Copyright Keith Hiscock	Lamellaria perspicua Copyright Steve Trewhella	Tritonia nilsodhneri Copyright Steve Trewhella	A pair of Aplysia punctata Copyright Steve Trewhella
Jorunna tomentosa Copyright Steve Trewhella	Nassarius reticulatus egg cases on eel grass. Copyright Steve Trewhella	Pandora albida Copyright Steve Trewhella	Psuedochama gryphina (exterior). Copyright Steve Trewhella
Psuedochama gryphina (interior). Copyright Steve Trewhella	Lacuna parva Copyright Steve Trewhella	Lacuna parva Copyright Steve Trewhella	Juvenile Sepia officinalis Copyright Steve Trewhella
Crassostrea gigas (with diver) Copyright Paul Newland	Pecten maximus in front of eelgrass Copyright Andy Pearson	Buccinum undatum Copyright Gordon Lang	Sepiola atlantica Copyright Gordon Lang
Simnia patula on white sea fan Copyright Dylan Jones	Three spawning Buccinum undatum with Sea Loch anemones Copyright Gordon Lang	Grey top shell Gibbula cineraria showing operculum Copyright Tabitha Pearman	Front view of Sepia elegans Copyright Becky Seeley
Side view of Sepia elegans Copyright Becky Seeley	Brown and white striped Nucella lapillus on barnacles Copyright Becky Seeley	Anterior view of a Celtic sea slug Onchidella celtica on Mytilus edulis Copyright Becky Seeley	Porania (Porania) pulvillus red cushion star Copyright Gordon Lang
Tritonia hombergi Copyright Gordon Lang