The keeping of dolphins, killer whales, and other marine mammals in captivity for entertainment has faced growing welfare scrutiny, with legislative bans spreading across multiple countries.
Marine mammal captivity welfare represents one of the most thoroughly documented cases of captivity preventing animals from meeting their fundamental needs. Orca, dolphins, and belugas evolved for vast ocean ranges, complex social lives, and sophisticated foraging behaviour that captivity cannot replicate. The welfare evidence is unambiguous - captive cetaceans live shorter lives, develop abnormal behaviours, and show chronic stress markers. The documentary Blackfish and subsequent public campaigns dramatically accelerated legislative change. The remaining question is the welfare of animals already in captivity - transition to sea pens or sanctuary facilities provides better welfare than continued captivity without enabling full wild release.