SeaWorld was founded in March 21, 1964 by four graduates of the University of California, Los Angeles. Although their original idea of an underwater restaurant was not feasible at the time, the idea was expanded into a 22-acre (8.9 ha) marine zoological park along the shore of Mission Bay in San Diego. After an investment of about $1.5 million, the park opened with 45 employees, several dolphins, sea lions, and two seawater aquariums, and hosted more than 400,000 visitors in its first year of operation.
As of December 31, 2012, there are 26 animal habitats, 10 rides, 20 shows, 2 play areas, 4 special limited-time events, and 11 "distinctive experiences" (including special experiences such as swimming with dolphins). Note that some of the shows may vary during dayparts or seasons, but are counted as separate shows.[2]
In November 2015, Seaworld announced that it would be changing its signature killer whale shows, which historically have featured theatrical and acrobatic performances, by making them more of a nature show that concentrates on natural whale behavior. The new orca presentation is scheduled to be released in 2017.
In 2017, the park will add five new attractions, including the Ocean Explorer, a dark ride that takes you through the sea while inside a submarine. There will also be a Zierer Waveswinger themed to a jellyfish, and three other family friendly attractions.