Dolphins in aquariums and marine parks remain one of the most controversial topics in animal welfare. Understanding the evidence base for and against captive dolphin welfare guides advocacy and policy positions.
Captive dolphin welfare is genuinely contested territory where the evidence does not support simple conclusions in either direction. Modern, accredited marine mammal facilities have improved dramatically from the concrete tanks of earlier decades — dolphins in well-managed facilities with complex social groups, environmental enrichment, and positive training relationships show behavioral profiles that differ from wild counterparts in some ways but not necessarily indicate severe welfare compromise. The strongest welfare concerns arise from: small, acoustically reverberant tanks that may impair communication; social groups too small to meet affiliative needs; swim-with-dolphin programs that stress animals through human contact; and breeding programs that perpetuate captivity without conservation benefit. The blanket positions — "all captive dolphins suffer" or "captive dolphins are fine" — both misrepresent a complex, facility-specific reality.