The Steller's Sea Eagle, Haliaeetus pelagicus, is a large bird of prey in the family Accipitridae. It lives in coastal northeastern Asia and mainly preys on fish. On average, it is the heaviest eagle in the world, at about 5 to 9 kilograms (11 to 20 lb; 0.79 to 1.4 st). This bird is named after the German naturalist Georg Wilhelm Steller.