Spiny Starfish (Marthasterias glaciallis)

 
 
Description & ID Features

The stiff limbs are covered by thick sharp spines. Spines are placed in rows and fastened to small calcareous plates. Colour varies from green blue, to purple . The underside yellow.

Diet

The Spiny starfish can reach a foot across, however onshore specimens are typically smaller. Diet consists of shellfish and smaller starfish.