Dolphins in marine parks and aquariums face significant welfare challenges. Understanding the science behind captive dolphin welfare informs consumer choices and policy advocacy.
The welfare case against keeping dolphins in captivity has strengthened considerably as research on dolphin cognition and social complexity has accumulated. Dolphins are highly intelligent, socially complex, wide-ranging animals whose natural behavioral repertoire — echolocation hunting, complex social communication, extensive daily movement — cannot be replicated in pool environments. The characteristic smile of dolphins is anatomical, not emotional — it provides no indication of wellbeing. Shortened lifespans, high rates of gastric ulcers (suggesting chronic stress), stereotypic behavior, and social conflict in artificial groupings all indicate poor welfare outcomes. Consumer refusal to attend marine parks with dolphin shows, combined with legislative restriction of new facilities, are the most effective levers for improving captive dolphin welfare.