Harbor seals are widely kept in zoological facilities, where their welfare depends on appropriate aquatic access, social groupings, and enrichment that supports their natural behaviors.
Harbor seal welfare in captivity requires adequate pool depth and size for diving, haul-out areas large enough for natural resting, and appropriate social groupings. Thermal regulation is important, particularly in warmer climates. Training through positive reinforcement allows necessary veterinary care while providing cognitive stimulation. Enrichment through novel objects, varied feeding presentations, and sensory experiences prevents boredom. Noise pollution from visitors and facility equipment can stress these acoustically sensitive animals.