Sea World is a marine mammal park, oceanarium, and theme park located on the Gold Coast, Queensland, Australia. It offers attractions such as rides and animal exhibits and promotes conservation through education and the rescue and rehabilitation of sick, injured or orphaned wildlife. The park is commercially linked to Warner Bros. Movie World and Wet'n'Wild Gold Coast as part of the theme park division of Village Roadshow. The park has no affiliation with an American park chain of a similar name.

A marine mammal park is a commercial theme park or aquarium where marine mammals such as dolphins, beluga whales and sea lions are kept within water tanks and displayed to the public in special shows. A marine mammal park is more elaborate than a dolphinarium, because it also features other marine mammals and offers additional entertainment attractions. It is thus seen as a combination of a public aquarium and an amusement park. Marine mammal parks are different from marine parks, which include natural reserves and marine wildlife sanctuaries such as coral reefs, particularly in Australia.