Cambria, San Luis Obispo County, California, to at least Sacramento Reef, northern Baja California. Intertidal to 20 m. [details]
Known only from Monterey Bay, California. 30–75 m. [details]
From Monterey County, California and the Farallon Islands to Cedros Island, Baja California. Depth 30–140 m. [details]
Anchorage, Alaska, to Puget Sound, Washington. Subtidal to at least 30 m. [details]
Kachemak Bay, Alaska, south to Cambria, San Luis Obispo County, California. Some museum shells suggest possible ... [details]
Established in Puget Sound, Washington, and Tomales Bay, and San Francisco Bay, California. May occasionally occur ... [details]
From Monterey County, California, to San Diego County and Todos Santos Bay, northern Baja California. Shallow subtidal. [details]
From Puget Sound, Washington, south to at least Punta Banda, Baja California. Subtidal to shallow depths often as ... [details]
British Columbia, Canada, to San Luis Obispo County, California. Intertidal and shallow subtidal. [details]
Southern California, to Baja California, and possibly further south. Introduced in central Puget Sound, Washington, ... [details]
Van Damne State Park, Mendocino County, to Palos Verdes Peninsula and San Pedro, Los Angeles County, California. ... [details]
From Santa Barbara, California, to San Martin Island, Baja California. Intertidal to at least 30 meters in shells ... [details]
Kenai-Cook Inlet, Alaska, to Friday Harbor, Washington. Subtidal to at least 30 m. [details]
Cascadia Abyssal Plain, Oregon, to Santa Cruz Island, California. 150–2,086 m. [details]
Cedros Island, Baja California, to Ecuador. Intertidal to 15 m. [details]
Bering Sea, Alaska, to Mazatlan. Intertidal to 100 m. [details]
San Pedro, Los Angeles County, California, to Central America. Low intertidal to 90 m, on clam shells, rubble in ... [details]
Hokkaido, Japan, to Gulf of Alaska and north to at least Wade Hampton County, Alaska. Subtidal to 100 m. [details]