Algal blooms can seem to appear overnight. A stretch of ocean that looked clear days earlier can suddenly appear discolored ...

Abby Smason, a water resources science graduate student at the University of Minnesota Duluth, rinses out a container before collecting a sample of water from the Duluth-Superior Harbor on Tuesday.

DULUTH — Researchers studying blue-green algae blooms in the Duluth-Superior Harbor have pinpointed the cyanobacteria species responsible for the bloom’s toxins in what the Minnesota Sea Grant, which ...

Have you ever happened across a body of water completely covered in a mysterious green slime? What first seems like some type of unsettling waterborne disease is simply an algal bloom. Algal blooms ...

The Michigan Department of Environment, Great Lakes and Energy is asking residents to report suspected harmful algal blooms using a new online form.

South Australia is desperate for help to tackle an unprecedented harmful algal bloom that has decimated marine life up and down the coast. While the extent of the damage is still unknown, my ...

South Australia’s catastrophic harmful algal bloom now affects almost 30% of the state’s coastline, stretching from the Coorong in the state’s southeast to the seafood-rich Spencer Gulf to the west.

Lake Hartwell is under a harmful algal bloom watch after new reports and testing. Officials urge swimmers and pet owners to avoid affected areas.

These blooms occur due to the rapid growth of cyanobacteria, commonly called blue-green algae, which are naturally found in ...