FWC Red Tide Update: High concentrations of red tide, fish kills and respiratory issues reported in Sarasota County
A bloom of the red tide organism, Karenia brevis, was observed in Southwest Florida over the past week in Sarasota, Charlotte, Lee, and Collier counties. Additional details are provided below.
- In Southwest Florida over the past week, K. brevis was observed at background to very low concentrations in and/or offshore of Pinellas County, background to high concentrations in Sarasota County, medium to high concentrations in Charlotte County, background to high concentrations in and/or offshore of Lee County, and background to high concentrations in and/or offshore of Collier County. Bloom concentrations (>100,000 cells per liter) persist in Sarasota, Charlotte, Lee, and Collier counties. Seven samples from Sarasota County, two samples from Charlotte County, 20 samples from and offshore of Lee County, and three samples from Collier County contained high concentrations of K. brevis (>1 million cells per liter).
- In Northwest Florida over the past week, K. brevis was not observed.
- Along the Florida East Coast over the past week, K. brevis was not observed.
In Southwest Florida over the past week, fish kill reports were received for Manatee, Sarasota, Charlotte, Lee, and Collier counties (please see https://myfwc.com/research/saltwater/health/fish-kills-hotline).
Respiratory irritation was reported over the past week in Southwest Florida in Sarasota, Lee and Collier counties.
Forecasts by the USF-FWC Collaboration for Prediction of Red Tides for Pinellas to northern Monroe counties predict net southwestern movement of surface waters in most areas and southeastern transport of subsurface waters over the next four days.
A midweek status update will be available on Wednesday, November 13th and the next complete status report will be issued on Friday, November 15th. Please check our daily sampling map, which can be accessed via the online status report on our Red Tide Current Status page.
This information, including maps and reports with additional details, is also available on the FWRI Red Tide website. The website also provides links to additional information related to the topic of Florida red tide including satellite imagery, experimental red tide forecasts, shellfish harvesting areas, the FWC Fish Kill Hotline, the Florida Poison Information Center (to report human health effects related to exposure to red tide), and other wildlife related hotlines.
To learn more about various organisms that have been known to cause algal blooms in Florida waters, see the FWRI Red Tide Flickr page. Archived status maps can also be found on Flickr.