[4] Liocarcinus pusillus is a small, colourful species with a broad, suboval carapace having a maximum width of 25 mm (1.0 in).

[4][5] This species occurs in a wide range of colours.

[4] The front has three sharpened tusks, directed forward.

[3] Liocarcinus pusillus occurs from North-West Africa, to Lofoten, Norway[4][5] including the North Sea.

[3] It is found around the shores of: England, in such places as Northumberland, Yorkshire, The Wash, Thames, the eastern English Channel, Isle of Wight, Portland, Plymouth, the Scilly Isles, the Bristol Channel, Liverpool Bay; Scotland - Shetland, Orkney, Firth of Forth, Argyll and Clyde, The Minch; Ireland, occurring in and around Dublin, Belfast, County Mayo, Galway Bay, Fastnet Rock, County Cork; and elsewhere in the British Isles including the Channel Islands, Anglesey and the Isle of Man.