Biology/Natural History: This species is a scavenger, or eats small invertebrates. Predators include staghorn sculpin, starry flounder, the seastar Astropecten verrelli, and the giant octopus Enteroctopus dofleini. Females usually are found buried in the mud. Seasonally found in bays but cannot osmoregulate and does not tolerate brackish conditions. In Puget Sound eggs were borne from December to April. Males protect females after mating. Megalopae and juveniles often cling to large jellyfish such as Pelagia colorata.
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