Leather Star

The leather star has a broad central disc and five plump, short arms which taper broadly from the central disc. The arms have two rows of tube feet and no bordering marginal plates. The upper, aboral, surface is smooth and velvety, made more so by the absence of spines and a light layer of mucous. It is covered with a reticulated pattern in reddish-brown, often with patches of greyish-blue. No pedicellariae are present, but the madreporite can be seen. This starfish can grow to about 30 centimetres (12 in) in diameter and has a distinctive smell that resembles garlic and sulphur.

The range of the leather star includes the western seaboard of North America from Cook Inlet, Alaska to northern Mexico. It occurs in Puget Sound. It lives in the intertidal zone and in deeper water down to depths of about 100 metres (330 ft). It is found on rocky bottoms and occasionally sandy seabeds.