Galapagos sea lions face welfare challenges from climate-driven El Nino prey failures, disease, and interaction with tourism and fisheries.
El Nino starvation events cause mass pup mortality as mothers cannot find fish close to colonies. Pups starving on beaches suffer prolonged nutritional decline before death or rescue. Tourism-transmitted disease including respiratory pathogens causes mortality. Entanglement in fishing gear causes drowning or limb amputations. Dog attacks at colony edges injure and kill sea lions.