Zoo Marine Mammal Welfare Standards

Marine mammals including dolphins, orcas and sea lions in captivity face profound welfare challenges related to space, social complexity and sensory needs.

Key Facts

Wild orcas may travel 160 km per day; captive tanks are a fraction of a percent of this space
Dolphin and orca welfare indicators include collapsed dorsal fins, tooth wear from jaw-popping and shortened lifespans
Social complexity of cetacean societies is extremely difficult to replicate in captivity
Many countries have banned orca captivity following increasing scientific consensus on welfare harms
Sea lions and seals generally adapt better to captivity than cetaceans, but still require large, complex environments

Welfare Considerations

The captivity of large marine mammals, particularly cetaceans, is increasingly viewed as ethically indefensible given the scale of welfare compromise involved. Stereotypic behaviours, aggression, skin raking and infant mortality rates all signal severe welfare deficits in many facilities. Sanctuary alternatives providing large natural sea pens are emerging as more humane options for animals that cannot be released. The use of marine mammals for entertainment performances compounds welfare concerns through forced training and public stress.

What You Can Do

Avoid marine parks and facilities that use marine mammals for performances
Support legislation banning the captivity and breeding of cetaceans
Donate to organisations working on marine mammal sanctuaries
Choose wildlife tourism that views marine mammals in their natural habitat