The keeping of dolphins and orcas in marine parks is one of the most contested areas of animal captivity due to their intelligence, social complexity, and space needs.
The welfare of captive cetaceans cannot be adequately addressed within any commercially viable marine park environment. Their cognitive sophistication — demonstrated through complex communication, cultural transmission, and social learning — makes the deprivation of their natural environment qualitatively different from species with simpler behavioral needs. Captive orca lifespans are markedly shorter than wild counterparts; reproductive success is poor; and behavioral abnormalities including abnormal aggression toward trainers are well-documented. The cultural shift following "Blackfish" demonstrates that public welfare concern can change institutional behavior — SeaWorld's program changes were driven entirely by ticket sale pressure from informed consumers.