06/13/2026
🎉🦭🌊 Three cheers for California sea lion Sidney, who is “sea-lebrating” her 17th birthday today! American Trail keepers say what they enjoy most about working with Sidney is her unique way of doing things.
“Sidney has some quirky behaviors that just make us laugh,” says keeper Jackie Spicer. “To scratch an itch, for example, she will come to the surface of the water and roll up against the rockwork.” Spicer says Sidney can be very habitual with her preferences, including the fish she likes to eat and the spot she likes to rest and relax in. Knowing Sidney’s likes and dislikes makes it easier for keepers to care for her.
Sea lions are very social and outgoing animals. At American Trail, Sidney shares a habitat with two other female sea lions—Celia and Ronin—and three young pelicans. Sidney enjoys the company of the sea lions but will also let them know when they are overbearing. Sea lions often make their displeasure known with their loud, iconic bark or by using their bodies to push each other around.
As ambassadors for their wild counterparts, our sea lions teach visitors about their social and outgoing nature. California sea lions don’t have a set social structure; instead, they come and go based on needs like feeding, resting, breeding and pupping. Wondering what to call a group of them? It depends where they are. In the water a group of sea lions is considered a raft. On land, they are considered a colony. And during mating and pupping, they are considered rookeries!
Photos by Ashley McDermott and Sarah Snider Keys/Smithsonian.