A harmful algal bloom occurs in bodies of freshwater when Cyanobacteria, also called blue-green algae, produce toxins.

POLK COUNTY, Fla. - The Florida Department of Health in Polk County (DOH-Polk) issued an alert today, April 21, 2025, ...

An "unprecedented" toxic algae bloom has overrun the coast of Southern California, sickening marine animals and staining the ...

Robinson said he has driven along the road past the lough for many years ... Gael Gildernew said the "potentially toxic algae" in the water at Martray Lough is "very concerning from an ...