Zoo Animals

Zoo Aquatic Mammal Welfare

Aquatic mammals including seals, sea lions, and cetaceans have complex needs that are often poorly met in captivity, with welfare assessments revealing high rates of stereotypy and chronic stress.

Key Facts

Orca in captivity have collapsed dorsal fins in over 100% of adult males indicating chronic stress
Bottlenose dolphins in captivity show skin lesions, ulcers, and immune suppression at high rates
Seal and sea lion pools are typically orders of magnitude smaller than wild ranging areas
Positive reinforcement training for medical procedures reduces acute handling stress
Public display shows involving trained behaviours are increasingly challenged on welfare grounds

Welfare Considerations

Aquatic mammal welfare in captivity is among the most contested in the zoo world. Evidence of chronic stress and inadequate environments challenges the ethical justification for display.

What You Can Do

Support transition of cetaceans from display pools to sea sanctuaries
Advocate for minimum space standards for aquatic mammals in captivity
Learn about aquatic mammal welfare science when evaluating marine park quality
Consider whether supporting marine parks is consistent with your animal welfare values