Pupping Season
This harbor seal pup was born about February 14. Newborn they weigh about 32lbs / 16kg and are able to swim and dive within hours of birth. They grow quickly on their mothers' milk doubling in weight by the time they are weaned after three or four weeks.
Females will only mate with the strongest males and have single pups. A full grown harbor seal can attain a weight of 290 lbs. / 132 kg. Females outlive males (30-35 years versus 20-25 years).