Pascal Kobeh / Articulate harp shell (Harpa articularis) on the sand at night, Sulu Sea, Philippines

Franco Banfi / True whelk sea snail (Buccinum sp) on rock. Tasiilaq, East Greenland. April.

Franco Banfi / True whelk sea snail (Buccinum sp) on rock. Tasiilaq, East Greenland. April.

Nick Upton / Dog whelk (Nucella lapillus) from Atlantic Ocean. Cornwall, England, UK. September.

David Fleetham / Auger shell (Terebridae) eye to eye with Skeleton shrimp (Caprellidae sp), close-up. Blurry areas in the background where freshwater is percolating up through sand and mixing with saltwater. Philippin...

David Fleetham / Cone shell (Conus sp) gliding across sand at night with two Mysid shrimps (Mysida sp) hitching a ride. Dumaguete, Philippines.

Chris Mattison / Rare purple form of Dog whelk (Nucella lapillus) on the shore at Nash Point, Glamorgan.

Chris Mattison / Rare purple form of Dog whelk (Nucella lapillus) resting on a colony of honeycomb worms (Sabellaria alveolata) on the shore at Nash Point, Glamorgan.

Robert Thompson / Dog whelk (Nucella lapillus) on rock. Mill Quarter Bay, Killard Point National Nature Reserve, Strangford, County Down, Northern Ireland. February.

Robert Thompson / Dog whelk (Nucella lapillus) and Common barnacle (Semibalanus balanoides) on rock. Mill Quarter Bay, Killard Point National Nature Reserve, Strangford, County Down, Northern Ireland. February.

Constantinos Petrinos / Caltrop murex (Murex Tribulus) laying their egg masses on muddy seafloor of the Lembeh Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Bat volute predatory sea snail (Cymbiola vespertilio) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Bat volute predatory sea snails (Cymbiola vespertilio) mating, Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Marbled cone snail (Conus marmoreus) venomous species, Lembeh Strait, North Sulawesi, Indonesia.

Chris Mattison / Major harp shell (Harpa major) on beach, Borneo.

Chris Mattison / Textile cone shell (Conus textile) on beach, a highly venomous species, Borneo.

Sue Daly / Netted dogwhelk (Nassarius reticulatus) moving across the seabed, Sark, British Channel Islands, UK, July.

Martin Gabriel / Woodcock murex snail (Murex scolopax), its aperture locked with operculum, Gulf of Oman, Sultanate of Oman, January, CROPPED

Nick Upton / Group of Dog whelks (Nucella lapillus) in an intertidal rock crevice among Acorn barnacles (Balanus perforatus) and Beadlet anemones (Actinia equina), Cornwall, UK, April.

Nick Upton / Dog whelk egg capsules (Nucella lapillus) with eggs visible inside in a crevice among intertidal rocks, Cornwall, UK, April.

Nick Upton / Dog whelk (Nucella lapillus) egg capsules surrounded by a mat of Crumb-of-bread sponge (Hymeniacidon perlevis) on exposed intertidal rocks, Cornwall, UK, April.

Robin Chittenden / Beadlet anemone (Actinia equina) with Barnacles (Thoracica) Dog whelk (Nucella lapillus) Brittany, France. August 2014

SCOTLAND: The Big Picture / Common whelk (Buccinum undatum) on maerl (Corallinales) bed, a priority marine feature. Within a Marine Protected Area, Shetland, Scotland, UK, September.

SCOTLAND: The Big Picture / Common whelk (Buccinum undatum) laying eggs, Loch Creran, Argyll and Bute, Scotland, UK, November. Small repro only.

Franco Banfi / Textile cone shell (Conus textile) Walindi, West New Britain, Papua New Guinea, Pacific Ocean

Franco Banfi / Geographic cone (Conus geographus) Walindi island, West New Britain, Papua New Guinea, Pacific Ocean

Franco Banfi / Marble cone shell (Conus marmoreus) Walindi, West New Britain, Papua New Guinea, Pacific Ocean

Alex Hyde / Eggs of Common whelk (Buccinum undatum) on beach. Anglesey, Wales, UK. December.

MYN / Dimitris Poursanidis / Sea snail shell (Pollia scacchiana) Greece. meetyourneighbours.net project

Chris Mattison / Textile cone shell (Conus textile) shell, highly venomous species.

Sue Daly / Eggs of Common whelk (Buccinum undatum) on beach, Sark, British Channel Islands.

Sue Daly / Eggs of Common whelk (Buccinum undatum) on seaweed washed up on beach, Sark, British Channel Islands.

Sue Daly / Common whelk (Buccinum undatum) Bouley Bay, Jersey, British Channel Islands.

Michael Pitts / Horse conch (Pleuroploca hunteria) close-up of eye stalks. Florida USA

MYN / Carsten Krieger / Dogwhelk (Nucella lapillus) from rock pool, County Clare, Republic of Ireland. August. Meetyourneighbours.net project

Nick Upton / Egg masses of Common whelk (Buccinum undatum) washed up on high water mark alongside dried out Bladder wrack fronds (Fucus vesiculosus), Rhossili, The Gower peninsula, Wales, UK, June.

Nick Upton / European oyster drill / Sting winkle (Ocenebra erinacea) a pest of oyster beds, on rocks low on the shore alongside Acorn barnacles (Balanus perforatus) exposed at low tide, with seaweed, rock pools a...

Nick Upton / Aggregation of Netted dog whelks (Nassarius reticulatus) scavenging on rocks just below the low water tideline, Rhossili, The Gower Peninsula, UK, June.

Nick Upton / Dog whelks (Nucella lapillus) and clusters of their eggs attached to a rock exposed at low tide, Rhossili, The Gower peninsula, Wales, UK, June.

Nick Upton / Dog whelk (Nucella lapillus), a predator of barnacles, on rocks encrusted with Common barnacles / Northern rock barnacles (Semibalanus balanoides) exposed at low tide, with seaweed, a rock pool and th...

Nick Upton / Seven Netted dog whelk (Nassarius retuculata) egg cases attached to a rock exposed at low tide, Lyme Regis, Dorset, UK, May

Tui De Roy / Panamic horse conch (Triplofusus giganteus) in tidepool, Santiago Island, Galapagos Islands.

David Fleetham / Geographic cone snail (Conus geographus) hunting on reef at night, Indonesia, Pacific Ocean.

David Fleetham / Marbled cone shell (Conus marmoreus) feeding on an Imperial cone (Conus imperialis) on the seabed, Hawaii, Pacific Ocean.

Sergio Hanquet / Blue starfish (Coscinasterias tenuispina) arms capturing Red-mouthed rock-shell (Stramonita haemastoma), Tenerife, Canary Islands, Atlantic Ocean.

Sergio Hanquet / Blue starfish (Coscinasterias tenuispina) arm capturing Red-mouthed rock-shell (Stramonita haemastoma), Tenerife, Canary Islands, Atlantic Ocean.

Joel Sartore / Photo Ark / Tinted cantharus (Pisania tincata) portrait, on white background, Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Tinted cantharus (Pisania tincata) portrait, on black background, Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Two Banded tulip snails (Cinctura lilium) on black background, Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Two Banded tulip snails (Cinctura lilium) on white background, Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Four Florida augers (Neoterebra dislocata) showing underside, on white background, Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Four Florida augers (Neoterebra dislocata) on black background, Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Two Rock snails (Thais haemastoma floridana) portrait, Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Rock snail (Thais haemastoma floridana) ventral view, body an shell, Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Pear whelk (Fulguropsis spirata) showing underside, on black background, Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Pear whelk (Fulguropsis spirata) portrait, Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Group of Eastern white slippersnails (Crepidula plana) inside shell of Lightning whelk (Busycon contrarium), Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Group of Eastern white slippersnails (Crepidula plana) inside shell of Lightning whelk (Busycon contrarium), Gulf Specimen Marine Lab and Aquarium.

Joel Sartore / Photo Ark / Giant Eastern murex (Hexaplex fulvescens) on black background, Gulf Specimen Marine Lab and Aquarium.

Shane Gross / Blue topsnail (Calliostoma ligatum) and other snails feeding on the eggs of the Leafy hornmouth (Ceratostoma foliatum), Vancouver Island, British Columbia, Canada, Pacific Ocean.

David Fleetham / Bridled triggerfish (Sufflamen fraenatum) feeding on Marlinspike auger (Oxymeris maculata) after extracting it from sand. Pacific Ocean, Hawaii. Sequence 4/4.

David Fleetham / Bridled triggerfish (Sufflamen fraenatum) feeding on Marlinspike auger (Oxymeris maculata) after extracting it from sand. Pacific Ocean, Hawaii. Sequence 3/4.

David Fleetham / Bridled triggerfish (Sufflamen fraenatum) extracting Marlinspike auger (Oxymeris maculata) to eat from sand. Pacific Ocean, Hawaii. Sequence 1/4.

David Fleetham / Bridled triggerfish (Sufflamen fraenatum) extracting Marlinspike auger (Oxymeris maculata) to eat from sand. Pacific Ocean, Hawaii. Sequence 2/4.

Nick Upton / Netted dog whelk (Nassarius reticulatus) on the move in a rock pool, The Gower, Wales, UK, August.

Francisco Marquez / Chief rocksnail (Hexaplex prínceps) on white background, Islas Marias Archipelago, Marias Biosphere Reserve, Mexico.

David Hall / A reproductive aggregation of Frilled dogwinkles (Nucella lamellosa) note the yellow egg cases, top centre, Agamemnon Channel, Sunshine Coast, British Columbia, Canada. February.

Sergio Hanquet / Butterfly cone shell (Conus pulcher canariensis) Tenerife, Canary Islands.

Sergio Hanquet / Butterfly cone shell (Conus pulcher canariensis) in seagrass bed, Tenerife, Canary Islands.

Shane Gross / A True tulip (Fasciolaria tulipa) snail at night, Eleuthera, Bahamas. February.

Ernie Janes / Common whelk (Buccinum undatum) shells on Titchwell Beach, Norfolk, UK. October 2018.

Ernie Janes / Common whelk (Buccinum undatum), Razor clam and other mollusc shells on Titchwell Beach, Norfolk, UK. October 2018.

Philippe Clement / Egg cases / eggs of netted dog whelk (Tritia reticulata / Nassarius reticulatus) attached to Razor shells, ashed ashore on beach, Hauts-de-France, France, July

Nick Upton / Netted dog whelk (Nassarius reticulatus) on the move to join others scavenging on a dead crab in a rock pool with its long siphon raised, Rhossili, The Gower, Wales, UK, September.