Typically adults measure about 1,8 m (5,9 ft) in length and 2,5 (8,2 ft) fin to fin. Weight may vary from 247 to 1000 kg (545 to 2205 lb).

Largest individuals may reach 3,3 m (10,8 ft) in length and 4,2 m (13,8 ft) vertically and weigh up to 2,300 kg (5,070 lb). Research suggests that females may be a bit larger than males.