Sea lions face multiple anthropogenic welfare threats including entanglement, disease, prey depletion and disturbance at breeding colonies requiring coordinated conservation responses.
Sea lion welfare is affected by a combination of acute and chronic threats that interact with each other. Animals weakened by domoic acid toxicity or nutritional stress are more vulnerable to entanglement and disease. Entanglement causes both immediate welfare harm and long-term injury. Breeding colony disturbance during pupping season has cascading welfare consequences as separated mothers cannot locate pups and pups may starve. The rehabilitation of stranded sea lions - particularly those with domoic acid toxicity - is challenging and intensive, requiring specialist facilities and extended care.