Florian Graner / Atlantic cod (Gadus morhua) swimming along seabed, Norway

Florian Graner / Atlantic cod {Gadus morhua} Tysfjord, Berents Sea, Norway

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 / 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,...

SCOTLAND: The Big Picture / Fisherman aboard boat holding Edible crab (Cancer pagurus) caught in lobster pot / creel, Lamlash Bay, South Arran Marine Protected Area, Isle of Arran, Scotland, UK, August 2016.

SCOTLAND: The Big Picture / Catch of Edible crabs (Cancer pagurus) in plastic basket, Lamlash Bay, South Arran Marine Protected Area, Isle of Arran, Scotland, UK, August 2016.

Gavin Hellier / Live fish for sale at a street market, Wan Chai District, Hong Kong, China, 2011.

Gavin Hellier / Live fish for sale at a street market, Wan Chai District, Hong Kong, China, 2011.

Gavin Hellier / Woman rearranging stocks of fish for sale at a street market, Wan Chai District, Hong Kong, China, 2011.

Jeff Rotman / Bycatch of American lobster (Homarus americanus), Brown Crab (Cancer pagurus), Little Skate (Leucoraja erinacea), Yellowtail Flounder (Limanda ferruginea) and Northern Sea Star (Asterias rubens) on de...

Jabruson / 'Epombepombe' (Strychos sp) ball-like forest fruit frequently eaten by the Agile Mangabey (Cercocebus agilis). This fruit shows signs of an attempt to access the fruit with bite marks scoring the hard...

Nick Upton / Common Blenny / Shanny (Lipophrys pholis) hiding under Coralweed (Corallina officinalis) in a rockpool near a Common / Edible periwinkle (Littorina liitorea), Rhossili, The Gower peninsula, UK, July.