- PETA says SeaWorld "has taken a step forward but more must come"
- SeaWorld has been under fire about its treatment of orcas since the 2013 documentary "Blackfish"
- "SeaWorld has been listening and we're changing. Society is changing and we're changing with it," the company said
(CNN)The killer whales currently in SeaWorld's care will be the last generation of the mammals enclosed at the water parks, according to a company announcement posted on its website.