A resident intertidal species with homing behavior (Ref. 32612). Inhabits tide pools and inshore waters on rocky bottoms or among algae at 0-30 m. Can leave tide pools when conditions become inhospitable (Ref. 31184). Feeds on mysids, amphipods (gammarids), decapods, polychaetes, mollusks, ophiuroids and fishes. Breathes air when out of water (Ref. 31184). Information on maximum length for male taken from Ref. 4698.