The Sea Lion Center is a division of bay.org, a 501(c)(3) not-for-profit with the mission to protect, restore and inspire conservation of San Francisco Bay and its watershed, from the Sierra to the sea. We offer free interpretive programs to complement one of San Francisco’s most popular attractions. Operated and managed by Aquarium of the Bay, the Sea Lion Center offers free interpretive programs to complement one of San Francisco’s most popular attractions. More than six million annual visitors have the opportunity to learn all about California sea lions and their history at PIER 39, as well as what everyone can do to help these charismatic mammals survive in their threatened habitat. The Sea Lion Center includes a classroom and exhibit space located directly above the sea lions' regular hangout on PIER 39’s K-Dock.