The red tide is continuing across the southwest Florida coast.
Samples collected in Collier, Lee, Hillsborough, Sarasota, Charlotte and Monroe counties over the past week indicate a few fish kills and respiratory irritations.
FWC says red tides are a natural part of the ecosystem, but they can bloom to high concentrations when conditions favor it.
Red tide is a common name for an algal bloom caused by a few species of dinoflagellates. The bloom takes on a red or brown color.