This seastar is an active predator of snails, bivalves, barnacles, and small chitons. It is not feeding on the anemones it straddles here. Diameter about 45 cm. Depth 18 m.
This closeup of a juvenile Pisaster was taken to show details of the seastar's dorsal surface. Blue rings surround pink spines, and tiny yellow pincers, pedicellariae, encircle the rings. Skin gills protrude from dark recesses.