Subspecies and Distribution. P.v.vitulinaLinnaeus,1758—NEAtlanticOceanincludingSvalbardStoNWFrance(Brittany),withoccasionalsightingsasfarSasNPortugal;Wboundaryuncertain,perhapsIceland. P.v.concolorDeKay,1842—NWAtlanticOcean,frommid-AtlanticUSAtotheCanadianArcticandEtoGreenland;Eboundaryuncertain,perhapsIceland. P. v. richardGray, 1864 — NE Pacific Ocean, from Aleutian Is through the Gulf of Alaska (including Iliamna Lake) S to the coast of Baja California (N Mexico); contact zone with stejnegert may occur in W Alaska Peninsula-E Aleutian Is. P. v. stejnegeri Allen, 1902 — NW Pacific Ocean along the coast of Russian Far East, from Kamchatka, the Kuril Is to N Japan (Hokkaido) and E to the Aleutian Is; contact zone with richardii may occur in E Aleutian Is—W Alaska Peninsula. in Phocidae