Sea lions are among the most popular zoo animals, but their welfare depends on pool design, social management, and training methods that vary widely across institutions.
Sea lion welfare in zoos has improved significantly as the industry has moved away from performance shows toward natural behavior demonstration and positive reinforcement training. However, wide variation exists between institutions. Pools that are too small, too warm, or chemically imbalanced cause chronic skin and eye problems. Social dynamics need active management as dominant animals can block subordinates from food. The best facilities combine naturalistic pool environments with extensive daily training that provides cognitive enrichment and allows health monitoring without stress.