5 very long tapering arms. Small central disc. Cream banded with red. Spines white or purple with dense wreaths of pincers surrounding them. To 60 cm (24 in) across.
Aleutian Islands, Alaska, to southern California; intertidal to 283 m (928 ft)*.
On soft bottoms, specializes in eating the thick-shelled clam KENNERLEY'S VENUS Humilaria kennerleyi. On rocky bottoms it eats green false-jingles, tunicates, lampshells and chitons.
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