Pascal Kobeh / Atlantic / Common rock crab (Cancer irroratus) on the reef in the middle of green sea urchins (Strongylocentrotus droebachiensis) Gulf of Saint Lawrence, Canada

Pascal Kobeh / Atlantic rock crab or common rock crab (Cancer irroratus) on the reef, Gulf of Saint Lawrence, Canada.

Nick Upton / Young Edible crab (Cancer pagurus) and a Rock goby (Gobius paganellus) side by side in a rock pool, looking towards the camera, The Gower, Wales, UK, August.

Nick Hawkins / Rock crab (Cancer irroratus) off Nova Scotia, Canada. August

SCOTLAND: The Big Picture / Horse mussel bed (Modiolus modiolus) with Brittle stars (Ophiothrix fragilis),Edible crab (Cancer pagurus) and Northern sea urchin (Strongylocentrotus droebachiensis) Sheltand Islands, Scotland, UK, S...

Nick Upton / Edible crab (Cancer pagurus) from Atlantic Ocean. Cornwall, England, UK. September.

Chase Dekker / Sea Otter (Enhydra lutris) feeding on Dungeness Crab (Cancer magister), Monterey Bay, California

Alex Mustard / Edible crab (Cancer pagurus) feeding on a bivalve on a chalk reef. Sherringham, north Norfolk, England, United Kingdom. North Sea

Alex Mustard / Portrait of an Edible crab (Cancer pagurus) on a chalk reef. Sherringham, north Norfolk, England, United Kingdom. North Sea

Alex Mustard / Pair of Edible crabs (Cancer pagurus) shelter in the structure of the Wreck of the Rosalie, which is encrusted with Plumose anemones (Metridium senile). Weybourne, north Norfolk, England, United Kingd...

Sue Daly / Edible crab (Cancer pagurus) on deep water coral reef (Lophelia pertusa) Trondheimsfjord, Norway, July.

Nick Upton / Edible crab (Cancer pagurus) in a rockpool, leaves frame, Cornwall, England, UK, September.