Experts say frightening encounters with sea lions are becoming more common and the likely reason for recent attacks is a toxic algae bloom poisoning the marine mammals, leading to rare acts of aggression as they move to shallow waters and in closer proximity to beachgoers.

There is no one-size-fits-all remedy for toxic blooms of blue-green algae, according to researchers at the Swiss Federal Institute of Aquatic Science and Technology. Methods for predicting algae blooms that work in one lake can fail completely in another.

The Wetlands and Wildlife Care Center in Huntington Beach is experiencing a high number of sickened seabirds on OC beaches.

Dübendorf, 03.04.2025 - To predict toxic algal blooms, researchers from Eawag recommend a combination of species identification and chemical measurements. Now, a new study confirms that there is no magic formula and that, instead, specific indicator molecules are needed for each lake.

Sea lions on the California coast are displaying strange behavior likely due to a harmful algae bloom impacting the region, according to marine researchers.

For decades agricultural waste and manure was dumped into this lake, which has caused issues for the city today.

Marine life care centers across Southern California are reporting a surge in the number of stranded dolphins and sick seals, likely caused by a growing toxic algal bloom off the coast.

If you’ve been online or wandered one of these beaches, you may have noticed a resurgence of what feels like an all-too familiar wildlife event –– a harmful algae bloom is here again, and spreading, impacting wildlife and causing marine mammal and wildlife rescue centers to be overburdened by the response.

Scientists say a massive algal bloom is releasing toxins that are making some marine animals more aggressive, and causing others to wash ashore either dead or seriously ill.