An underwater bloom of toxic algae has wreaked havoc off the coast of South Australia since mid-March 2025. After eight ...

A 2024 satellite photo shows an unusually active bloom of toxic cyanobacteria swirling in the water of Nevada's Pyramid Lake.

A sea lion with domoic acid poisoning from toxic algae blooms has beached itself in Redondo Beach on Tuesday, March 18, 2025.

Blue-green algae blooms are appearing in the Caloosahatchee River in Florida. Exposure to the toxins produced by some algae can pose health risks to humans and animals. Nutrient pollution from human ...

The City of Boulder is asking residents to keep themselves and their pets out of the water at the Boulder Reservoir due to a possible harmful algae bloom. Although the swim beach is closed for the ...

KINGSTON, N.Y. — Isolated regional sightings of a large, toxic and widespread harmful algae bloom have sparked concern in Hudson River communities and the closure of Kingston Point Beach, Riverkeeper ...

The Marine Mammal Care Center, which has been struggling for nearly four months to keep pace with a toxic algae bloom that sickened and killed animals all along the California coast, celebrated the ...