Southern California officials are urging beachgoers in the Malibu area to avoid contact with distressed sea lions. The California Wildlife Center has received numerous calls regarding sea lions exhibiting signs of domoic acid poisoning, likely caused by a recent algal bloom.
Domoic acid, produced by toxic algae, can accumulate in fish, which are then consumed by sea lions. The toxin affects the brain and heart, leading to symptoms like seizures, disorientation ('stargazing'), and lethargy. Affected animals may become aggressive and bite without warning.
This is not an isolated incident. Harmful algal blooms, sometimes referred to as "red tides," have occurred previously along the California coast, including significant events in 2023 and 2024 that resulted in the deaths of hundreds of sea lions and dolphins. Global warming may be extending the peak season for these blooms.
Authorities advise the public to report distressed animals to the California Wildlife Center rather than attempting to interact with them directly. The Ocean Protective Council is also monitoring the impact of Southern California wildfires on coastal ecosystems, which can exacerbate these issues.