In British Columbia, Steller sea lion males can weigh over 1102 lbs (500 kg) and grow up to 9.84 feet (3 m) long. Meanwhile, male California sea lions can grow up to 7.4 feet (2.25 m) long and weigh over 661,4 lbs (300 kg). As a general rule, females tend to weigh less than half the weight of males. Show more