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Biology/Natural History: Feeds on detritus and sessile invertebrates. Predators include rockfish (Sebastes atrovirens, S. chrysomelas and S. caurinus), kelp greenling Hexagrammos decagrammus, and sculpins. Seems to be often found around sea anemones. May decorate slightly by putting a few pieces of algae on its rostrum. Other algae and bryozoans seem to overgrow the carapace naturally. This crab often sits with the anterior end pointed down. Females may carry eggs nearly any time of year. May reproduce several times a year. This species has a terminal molt so full-grown adults will no longer grow (and the carapace can become overgrown)


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© Rosario Beach Marine Laboratory

Source: Invertebrates of the Salish Sea

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