The director and star of the 2009 documentary "The Cove" say people won't lose their connection with whales and dolphins if theme parks stop putting them on display.
The Academy Award-winning film, by director Louie Psihoyos, showed activist Ric O'Barry campaigning against the killing of dolphins in Japan.
The director says keeping marine mammals captive has always been about money, not education. He says children will love dolphins and whales just as they love dinosaurs, extinct now for millions of years.
O'Barry once trained dolphins for the television series "Flipper" before advocating for their freedom. He says SeaWorld is making a step in the right direction, but he says all of its marine mammals should be released into sanctuaries.
O'Barry says the public would support such places even without animal performances.