Taken on 11/27/13 at Cabrillo Aquarium; normally I would not add an aquarium specimen to the guide but I have also photographed these in the wild during exceptionally low tides in December in Orange County. Adding this image as opposed to those mainly because I think this one's a better photo. I note that there are at least a few other such aquarium photos in the guide (such as here).

Adds the species (and family) to bugguide