Adult males

It's summer, and the adult males are back on the beach.

 This one lets the audience know he's here. He's gained plenty of weight on his post-breeding season foraging migration.

 They are piled up, although this isn't a very busy time of year. The age range is from five years to maturity. Some could be as old as twelve. They are in varying stages of molting, accounting for the brown skin peeling off to reveal gray skin underneath.

Time to settle down and get some rest.