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.

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.

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.

Sue Daly / Close-up of an Edible crab (Cancer pagurus), Sark, British Channel Islands, UK, August.

Sue Daly / Edible crab (Cancer pagurus), Sark, British Channel Islands, UK, August.

SCOTLAND: The Big Picture / Edible crab (Cancer pagurus) semi buried in the seabed amongst boulders with sea urchins and sunfish in background, South Arran Marine Protected Area, Isle of Arran, Scotland, UK, August.

SCOTLAND: The Big Picture / Edible crab (Cancer pagurus) sitting between hydroids (Nemertesia ramosa) and Plumose anemone (Metridium senile) with fish swimming in plankton bloom in background, South Arran Marine Protected Area,...