Harmful algal blooms do more than disappoint beachgoers with a do not swim advisory. Excessive growths of blue-green algae, known as cyanobacteria, and Karenia brevis, which creates red tide, release ...

Archive photos show a sea of green in Florida. Harmful algal blooms are a "growing problem" in every "US coastal and Great ...

Florida's red tide is a recurring harmful algal bloom that poses a persistent threat to the state's coast. The bloom, caused by Karenia brevis algae, can lead to significant fish kills and harm marine ...

In the battle against toxic algae blooms that wreak havoc on vacations, marine life and coastal economies, a group of University of South Florida researchers say they've developed a promising tool ...

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.

Tell us about your experiences with red tide and blue-green algae as we report on water quality in the Sunshine State. Zachary T. Sampson is the assistant managing editor/investigations. He can be ...

It is not a bad start to the Red Tide season across western Florida, especially since no microorganisms have been detected in the southwest, where toxic algae blooms often occur during early fall. But ...

While much of Florida's coastline remains clear this week, the Panhandle is seeing a resurgence of Karenia brevis, the organism responsible for red tide. State monitors have confirmed the presence of ...