Toxic Algae Sickens California Sea Lions

California rescue centers are overwhelmed by a dramatic increase in sick sea lions, with over double the typical numbers washing ashore this year. These animals are suffering from domoic acid poisoning, a neurotoxin originating from harmful algal blooms that multiply through the marine food chain. Symptoms include severe seizures, lethargy, and brain lesions. This crisis is linked to warmer ocean temperatures, exacerbated by El Niño conditions, which are creating a more favorable environment for these toxic blooms.

The increased prevalence of the toxin is pushing sea lions farther north in search of food, leaving vulnerable pups unattended and starving in traditional southern breeding grounds. Rescue operations face significant strain, with daily call volumes jumping dramatically. Transporting a single, large sea lion can require multiple rescuers due to their size and potential for aggressive behavior when ill. Despite these challenges, rehabilitation efforts continue, with some rescued animals being returned to the wild. This outbreak serves as a critical indicator of deteriorating ocean health, with potential risks also extending to human health through contaminated seafood.