The edible crab or brown crab (Cancer pagurus), is a species of crab found in the North Sea, North Atlantic Ocean, and perhaps the Mediterranean Sea. It is a robust crab of a reddish-brown color, having an oval carapace with a characteristic "pie crust" edge and black tips to the claws. A mature adult may have a carapace width up to 25 cm (10 in) and weigh up to 3 kg (6.6 lb). C. pagurus is a nocturnal predator, targeting a range of mollusks and crustaceans. It is the subject of the largest crab fishery in Western Europe, centered on the coasts of the British Isles, with more than 60,000 tons caught annually.