Pinnipeds (seals and sea lions) in zoos and aquariums have specific welfare needs related to their semi-aquatic lifestyle. Understanding and meeting these needs is essential for good welfare outcomes.
Pinniped welfare in zoos has improved significantly through positive reinforcement training programs that provide cognitive engagement and enable cooperative medical care. The traditional performing sea lion show, which emphasized unnatural tricks under aversive control, has been largely replaced by educational demonstrations using natural behaviors reinforced positively. This represents genuine welfare progress. The remaining welfare challenges center on pool design - pools need adequate depth for diving behavior, appropriate water temperature, high water quality, and sufficient haul-out space for the number of animals. Shows that require pinnipeds to perform repeatedly for visitor entertainment without adequate rest periods between sessions remain a welfare concern where they persist.