Global Range: North Pacific Ocean, mainly in moderate temperate waters. Mainly British Columbia to Baja California, Kuril Islands to Japan in western Pacific; sometimes north to Aleutians and Gulf of Alaska; in the eastern Pacific, apparently most common off central and southern California; at least as far south as 35 degrees north in the central Pacific (Jefferson and Newcomer 1993). Rare in Canadian waters (Baird and Stacey 1991). Eastern and western Pacific populations may be separated by an area of very low density south of the western Aleutians (Leatherwood and Reeves 1983).