Margarites vorticifer (Dall, 1873) Vortex Margarite
Eider Point, Unalaska Bay, Unalaska Island, SCUBA 6 m. on boulders, 2 October, 2001 (about 18 mm.)
Eider Point, Unalaska Bay, North side of Unalaska Island, Aleutian Islands, Alaska, SCUBA at 5-10 meters, 17 June, 2003 (about 23 mm.)