Brown turban snail. Conical rounded shell to 30 mm, light brown but usually encrusted with dark maroon non-coralline red algae. Umbilicus closed (arrow); low spiral ridge around center of base ends in a notch & tooth on inner edge of aperture (inset). Foot black with orange margins.
Common on rocks & algae, lower edge of mid-intertidal zone down into subtidal; protected outer coast; bulk of population lives subtidally in kelp forests; herbivorous.Geo Range: Cape Arago, Oregon to Channel Islands