Fish kills can start when levels reach 10,000 cells per liter. In 20 Florida locations, concentrations were higher than 100,000. Health alerts for red tide have been issued in Lee, Collier counties.

Red tide blooms occurred long before Lake Okeehochobee was connected to the Caloosahatchee River in order to drain the Everglades. However, nutrients flowing from the lake can feed blooms nearshore.

Red tide algae also make toxins, though scientists don’t know why. These toxins can damage the breathing and digestive systems of wildlife and people in the area.

Red tide is present in Southwest Florida, but is not expected to reach Panama City Beach in the near future. The red tide organism, Karenia brevis, was not found in any recent samples collected in ...

Red tide outbreaks tend to fade by January or February as cold fronts pushing across the Gulf of Mexico will literally tear the blooms apart. The blooms drift with sea currents, tides and winds ...

A red tide is a rapidly-growing algae bloom that, if severe, can cause red discoloration in the water, said Chatham Shellfish Constable Renee Gagne.

The Bureau of Fisheries and Aquatic Resources (BFAR) in Region 7 (Central Visayas) has declared Siit Bay in Siaton, Negros ...