Tropical Marine Life Moves Into California as El Niño Warms Coastal Waters
A strong El Niño is pushing unusually warm water toward California, drawing tropical animals such as flying fish, manta rays, and a venomous yellow-bellied sea snake, along with uncommon catches like yellowfin tuna and wahoo. Scientists have documented sea turtles nesting in California for the first time, and an aquarium took in about 200 eggs to shield them from a tropical storm. The same warming is harming native marine life, helping create a vast algal bloom from Southern California to British Columbia, killing seabirds, and threatening kelp forests.
A strong El Niño is pushing warm water eastward across the Pacific, raising California coastal temperatures and sea levels. This event may be the strongest in memory. Tropical animals have appeared, including flying fish, manta rays, and a venomous yellow-bellied sea snake last seen in the state during the 2015 El Niño.
Anglers have caught yellowfin tuna, wahoo, and dorado, and recent sightings include hammerhead and whale sharks. Scientists recorded sea turtles nesting near Seal Beach and Huntington Beach for the first time. An aquarium housed about 200 eggs in September to shield them from a rare tropical storm. The heat also fed a vast algal bloom and endangers kelp forests.
Californians and visitors may encounter novel marine wildlife, drawing curiosity and tourism, while fishers could see shifting catches and unfamiliar risks from venomous species. Coastal communities may need to respond to seabird deaths, algal bloom effects, and threats to kelp forests. Aquariums and scientists could play a larger role in monitoring and protecting vulnerable eggs and native ecosystems.