Florida environmental officials are keeping a close eye on the Gulf and Atlantic coasts this week as the latest water quality samples show trace amounts of Karenia brevis, the organism that triggers red tide. According to the most recent data, the organism was detected in eight samples across the state, though none reached the “bloom” threshold of 100,000 cells per liter that typically signals trouble for marine life and beachgoers.
The distribution of the algae remains scattered. In Northwest Florida, six samples from Bay County showed concentrations ranging from background to very low levels. Meanwhile, single samples from Monroe County in the southwest and Miami-Dade County on the East Coast also picked up background traces of the organism.
Despite these detections, the Florida Fish and Wildlife Conservation Commission (FWC) reported no fish kills or respiratory irritation—common side effects of high-density red tide—anywhere in the state over the last seven days.
Researchers are also monitoring a separate patch of elevated chlorophyll located roughly 15 to 20 miles offshore.
While high chlorophyll levels can sometimes indicate an emerging red tide, satellite imagery from February 18 suggests this specific patch is not K. brevis and is currently moving further out into the Gulf.
Short-term forecasts from the USF-FWC Collaboration for Prediction of Red Tides indicate that water currents are largely moving toward the north and northwest between Walton and Lee Counties, while southern regions near Collier and Monroe Counties are seeing northward surface movement with very little activity deeper in the water column.
For now, the situation remains in a holding pattern. While the presence of the organism is a routine part of Florida’s coastal ecology, the lack of high concentrations is a positive sign for local tourism and fishing industries.
State agencies will continue to rely on a mix of physical water sampling and NOAA satellite imagery to track any changes in the coming days. The next comprehensive update on water conditions is scheduled for release on Friday, February 27.
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