Doug Perrine / Greenland sleeper shark (Somniosus microcephalus) swimming over Anemones, Sea stars and Whelks, St. Lawrence River estuary, Canada NB: this shark was wild and unrestrained

Ashley Cooper / A fisherman landing whelks destined for the Asian market on the Cob at Lyme Regis, part of the World Heritage site of the Jurassic Coast, Dorset, UK. June 2012.

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 / 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 / Common mussels (Mytilus edulis), Dog Whelks (Nucella lapillus) and Common barnacles (Semibalanus balanoides) attached to rocks exposed at low tide, Rhossili, The Gower peninsula, Wales, UK, June.

Christophe Courteau / Eggs of Netted dogwhelk {Nassarius reticulata} on seaweed. Brittany France

Nick Upton / Netted dog whelks (Nassarius reticulatus) scavenging on rocks among Sea Lettuce (Ulva lactuca) and Irish moss / Carrageen (Chondrus crispus) seaweeds exposed on a low spring tide, Rhossili, The Gower...

Nick Upton / Honeycomb worm reef (Sabellaria alveolata) with Common barnacles (Semibalanus balanoides) and Dog whelks (Nucella lapillus), St.Bees, Cumbria, UK, July

Nick Upton / Honeycomb worm reef (Sabellaria alveolata) with Common barnacles (Semibalanus balanoides) and Dog whelks (Nucella lapillus), St.Bees, Cumbria, UK, July

Nick Upton / Three Dog whelks (Nucella lapillus), predators of barnacles, on rocks encrusted with Common barnacles (Semibalanus balanoides) exposed at low tide, North Berwick, East Lothian, UK, July

Nick Upton / Dense cluster of Dog whelks (Nucella lapillus), predators of barnacles, on rocks encrusted with Common barnacles (Semibalanus balanoides) exposed at low tide, St. Bees, Cumbria, UK, July

Nick Upton / Dense cluster of Dog whelks (Nucella lapillus), predators of barnacles, on rocks encrusted with Common barnacles (Semibalanus balanoides) exposed at low tide, St. Bees, Cumbria, UK, July

Nick Upton / Four Dog whelks (Nucella lapillus), predators of barnacles, on rocks encrusted with Common barnacles (Semibalanus balanoides) exposed at low tide, some with barnacles growing on their shells, North Be...

Nick Upton / Dog whelks (Nucella lapillus) on rocks encrusted with Common barnacles (Semibalanus balanoides) exposed at low tide, some with barnacles growing on their shells, North Berwick, East Lothian, UK, July

Nick Upton / Dog whelks (Nucella lapillus) dense cluster on rocks encrusted with Common barnacles (Semibalanus balanoides) exposed at low tide, some with barnacles growing on their shells, with sand flats and the...

Toby Roxburgh / 2020VISION / Fishermen unloading bags of Common whelks (Buccinum undatum) at the harbour (The Cobb), Lyme Regis, England, UK, February 2011

LYNN M. STONE / Common Florida sea shells in sea foam at edge of surf. Lightning Whelks (brown lengthwise stripes), Pen (lavender blue), Tulips (whorled tan striping), et. al.. Tarpon Springs, Florida, USA.

Doug Wechsler / Mass of Dog whelks / Mud snails (Nassarius obsoletus) Evangaline Beach, Bay of Fundy, Nova Scotia, Canada

Robert Thompson / Dog whelks {Nucella lapillus} in tidepool, Ballyhenry Point, Strangford Lough, County Down, Northern Ireland, September

Philippe Clement / Collection of shells: Common Mussel (Mytilus edulis), Baltic tellin shell (Macoma balthica), Rayed trough shell (Mactra stultorum cinerea / Mactra corallina cinerea), Netted dog whelk (Nassarius retic...

Niall Benvie / Young boy about to pick up a Common whelk shell {Buccinum undatum} UK.

Sue Daly / Dog whelk {Nucella lapillus} Jersey, Channel Is, UK Corbiere

Sue Daly / Eggs of Netted dog whelk {Nassarius reticulatus} Jersey, Channel Is, UK St Catherines

Dan Burton / Slender colus whelk {Colus gracilis} St Abbs, Scotland, UK

Sue Daly / Eggs of Dog whelk {Nucella lapillus} Jersey, Channel Is, UK Corbiere

Ross Hoddinott / Dog whelks with eggs {Nucella lapillus} Cornwall, UK

Ross Hoddinott / Dogwhelk eggs {Nucella lapillus} UK

Nick Upton / Dog whelks (Nucella lapillus) with varied colours and patterning, exposed at low tide on barnacles. Rhossili, The Gower Peninsula, UK, July.

Nick Upton / Dog whelks (Nucella lapillus) with varied colours and patterning, exposed at low tide on barnacles. Rhossili, The Gower Peninsula, UK, July.

Adrian Davies / Dogwhelk eggs {Nucella lapillus} Brittany France