Stay in the know about wildlife, water quality, and ecosystems on Sanibel and Captiva Islands and in Southwest Florida

Red Tide Continues to be Detected in SWFL

May 18, 2021
The Florida Fish & Wildlife Conservation Commission’s most recent daily sampling map (pictured here) shows the results of the last eight days of sampling for red tide.
Today’s May 5 mid-week report states that the red tide organism, Karenia brevis, persists in Southwest Florida. Over the past week, K. brevis was detected in 48 samples, with bloom concentrations (>100,000 cells/Liter) observed in three samples from Charlotte County and two samples from Collier County.
In Southwest Florida over the past week, K. brevis was observed at very low concentrations in Hillsborough County (in two samples), background to low concentrations in Manatee County (in 10 samples), background to low concentrations in Sarasota County (in 15 samples), low to medium concentrations in Charlotte County (in four samples), background to low concentrations in and offshore of Lee County (in 12 samples), and background to high concentrations in Collier County (in five samples). Samples from Pinellas County did not contain red tide.
Click the button below to learn more about red tide and how to track it.


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