Females, on the other hand, grow to only 7 feet long and weigh only 600 pounds. Steller sea lions eat mostly fish. Stellers can swim through the water at 17 miles per hour. Steller sea lions haul out on remote rocky islands and coasts to rest and to give birth. When they're ready to breed, female Stellers usually return to the same rookeries where they were born.
Females usually have just one pup in a season.
During the breeding season, bulls establish and maintain territories on the rookeries and don't eat during this time. Young Stellers are about three feet long at birth and first venture into the water when they're about three to four weeks old. In the wild, female Stellers may live for 30 years but males usually live for only 20 years.