The welfare of dolphins, orcas, and other cetaceans in marine parks has been intensely scrutinized, leading to significant regulatory changes and corporate policy shifts in the past decade.
The welfare evidence for cetaceans in entertainment facilities is among the most thoroughly documented in zoo animal welfare research. The physical limitations of captive environments — tank size relative to natural range, artificial social groupings, forced performance schedules — create welfare deficits that behavioral indicators consistently reveal. Stereotypic behaviors, aggression toward conspecifics and trainers, and documented psychological abnormalities point to environments that cannot meet the cognitive and social needs of highly intelligent, wide-ranging animals. The shift by major operators away from theatrical shows toward education programs reflects both welfare evidence and changing public values. The remaining policy question concerns whether any captive environment can meet cetacean welfare needs, and whether the educational value claimed by facilities justifies welfare costs that most wildlife welfare scientists consider substantial.