Marineland, is a themed zoo and amusement park in Niagara Falls, Ontario, Canada. The park has performing marine animal shows, sea mammal and land animal exhibits, and amusement rides. It keeps dolphins, sea lions, an orca, and beluga whales. The park also keeps bears, deer, and other land animals. It was founded and operated by John Holer, a Slovenian immigrant, from 1961 until his death in 2018. It is privately owned-and-operated by his family.
The park's keeping of sea mammals is controversial, and the park is involved in several lawsuits related to the practice. The keeping of the sea mammals is opposed by animal rights activists and Marineland has been the site of numerous animal rights demonstrations.