Shore crabs (Carcinus maenas) are a common crustacean. They are often found around the sea shore.
They come in a variety of colours. They are often green or brown. They have eight legs and two large pincers. The width across the shell is up to 5 centimetres (2.0 in). The usual width is about 2 to 3 centimetres (0.79 to 1.2 in).
Shore crabs are a nocturnal predator which means it hunts at night. They eat small crustaceans, molluscs, worms and some fish.
A female shore crab can lay up to nearly 200 thousand eggs at once. They carry the eggs with them until they hatch. Like most crabs, when a shore crab gets too big for its shell, it sheds its shell. After that, it has a new soft shell which soon hardens.