Red tide is caused by a harmful algae bloom. It can bring respiratory problems and even fish kills in high concentrations.

Red tide is caused by an microscopic algae called karenia brevis. Health alerts for red tide have been issued for several areas in Southwest Florida. Red tides can last for days, weeks or months.

The Florida Department of Health in Lee County still has advisories posted for several area beaches as red tide counts continue to hover well above the toxic range. DOH says coastal residents ...

Red Tide is a harmful algal bloom caused by a naturally occurring alga (a plant-like microorganism) called Karenia brevis or K. brevis. When K. brevis appears in large quantities – typically in the ...

Already this year, the Florida Fish and Wildlife Conservation Commission has warned red tide in the Florida Keys and Southwest Florida waters have hit high levels. And that's not all. Toxins from ...

Red tide has waters off Southwest Florida in the "kill zone." Caused by the Karenia brevis organism, red tide is no stranger to Florida waters. They've been documented in the Gulf of Mexico — soon to ...