Toothed Crab

Pirimela denticulata is a "small, pretty crab", up to 12 mm (0.5 in) long and 15 mm (0.6 in) across the carapace. Its colouring is mostly green, with mottling of brown, purple or red. The front edge of the carapace has three teeth between the eyes, two teeth around the orbits of the eyes and five teeth along either side.

Pirimela denticulata is found from the British Isles to Mauritania, the Mediterranean Sea, the Canary Islands, the Cape Verde Islands, and the Azores. It lives in burrows in sandy sediments, or on underwater vegetation, at depths of up to 250 m (820 ft).