Sea lions face conflicts with commercial fisheries, entanglement in fishing gear, and marine pollution. Understanding their welfare needs informs both conflict mitigation and rehabilitation efforts.
Sea lion welfare threats create acute welfare harms at both individual and population levels. Domoic acid toxicosis from algal bloom toxins causes neurological seizures that are both distressing and life-threatening — sea lions wash ashore in states of severe neurological distress requiring emergency stabilization. Entanglement in fishing line and packing bands cuts into necks and flippers progressively as animals grow, causing infected wounds and limb loss. Rehabilitation programs provide critical individual welfare relief but are resource-intensive — treatments for domoic acid toxicosis require days to weeks of intensive care. Fishery management that reduces sea lion-fishery conflict through non-lethal deterrence is both welfare-protective and more effective than lethal management.