In shells of Olivella biplicata
San Diego County, California, US
In the shells of Black Turban Snails (Is the brown shell still from a Black Turban Snail?)
Pagurus samuelis, the blueband hermit crab, is a species of hermit crab from the west coast of North America, and the most common hermit crab in California. It is a small species, with distinctive blue bands on its legs. It prefers to live in the shell of the black turban snail, and is a nocturnal scavenger of algae and carrion.