Walruses (from Dutch: wal meaning "shore", and r(e)us meaning "giant") are large semi-aquatic mammals that live in the cold Arctic seas of the Northern Hemisphere. Two subspecies exist: the Atlantic, Odobenus rosmarus rosmarus, and the Pacific, Odobenus rosmarus divergens. The Pacific walrus is slightly larger, with males weighing up to 1,800 kg (4,000 lb), but Atlantic males top out at 1,600 kg (3,500 lb). The walrus should not be confused with the elephant seal, another large pinniped.