The Marine Mammal Center Visitor Center is open 10 a.m.-4 p.m. daily except major holidays. The Visitor Center will be open to the public while the main hospital undergoes a major renovation project. The Marine Mammal Center is a hospital and conservation facility for wild seals, sea lions and dolphins. Learn about marine mammals through exhibits and shop at the gift store, all within walking distance of Rodeo Beach in the Marin Headlands, 1049 Fort Cronkhite, Sausalito. (415) 289-7325. www.marinemammalcenter.org.