Pier 39 is a shopping center and popular tourist attraction built on a pier in San Francisco, California. At Pier 39, there are shops, restaurants, a video arcade, street performances, the Aquarium of the Bay, virtual 3D rides, and views of California sea lions hauled out on docks on Pier 39's marina. A two-story carousel is one of the pier's more dominant features, although it is not directly visible from the street and sits towards the end of the pier. The family-oriented entertainment and presence of marine mammals make this a popular tourist location for families with kids. The pier is located at the edge of the Fisherman's Wharf district and is close to North Beach, Chinatown, and the Embarcadero. The area is easily accessible with the historic F Market streetcars. From the pier one can see Angel Island, Alcatraz Island, the Golden Gate Bridge, and the Bay Bridge. Blue & Gold Fleet's bay cruises leave from Pier 39. History Pier 39 was first developed by entrepreneur Warren Simmons and opened October 4, 1978. On December 22, 2017, the Federal Bureau of Investigation arrested Everitt Aaron Jameson, a 25-year-old former Marine, on suspicion of planning a terrorist attack in the Pier 39 area over Christmas. Sea lions California sea lions have always been present in San Francisco Bay. They started to haul out on docks of Pier 39 in September 1989. Before that they mostly used Seal Rock for that purpose. Ever since September 1989 the number of sea lions on Seal Rock has been steadily decreasing, while their number on Pier 39 has generally increased. Some people speculate that sea lions moved to docks because of the 1989 Loma Prieta earthquake, but the earthquake happened after the first sea lions arrived at Pier 39. It is likely that the sea lions feel safer inside the Bay. The Bay Ecotarium/Bay.org (501c-3) non-profit watershed conservation group in the Bay Area, operates the Sea Lion Center as an extended education arm of the Aquarium of the Bay on Pier #39. Naturalists and education staff interact with visitors and school groups with programs and demonstration activities. According to President & CEO George Jacob, plans are afoot to celebrate the 30th anniversary of the arrival of sea lions in 2020. Although the reason for their migration to the pier is unclear, the refurbishing of the docks in September 1989 required the removal of all