Sea lions are caught in fishing gear, shot by fishermen protecting fish stocks, and face food competition from industrial fishing, creating significant welfare burdens across Pacific populations.
Individual sea lions face welfare insults from multiple directions. Domoic acid poisoning causes seizures, disorientation, and death in affected animals - marine mammal rescue centers treat hundreds of poisoned sea lions annually in California. Gunshot wounds leave animals to die slowly over hours to days. Entanglement injuries from fishing line and monofilament cut progressively deeper as sea lions grow, causing severe lacerations. Starving sea lion pups on beaches - a consequence of climate-driven prey scarcity - represent a particularly visible welfare emergency.