Age Classes Northern elephant seals can be categorized into multiple classes based on their age and gender. Females mature earlier than males and reach adulthood several years before males do. Pup = less than 1 month Super Weaner = 1 – 12 months Weanling = 1...
April – May Adult females that left the rookery after weaning their pups, as well as juveniles that were out at sea all winter, begin arriving late in March. This is the start of the molting season. Growing new skin at sea would cause a tremendous heat loss....
September – November Before all the big males have left, the fall haul-out begins. Juveniles of both sexes return from their post-molt migration. They have been at sea since their molt in the spring. As youngsters, they come ashore in the fall, but as they grow...
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