Fort Myers Beach Conditions

Know before you go!


From the Florida Fish and Wildlife Conservation Commission (March 22, 2023)

In Southwest Florida over the past week, K. brevis was observed at background to medium concentrations in and offshore of Pinellas County, background to medium concentrations in Manatee County, very low concentrations in Sarasota County, very low concentrations in Charlotte County, background to low concentrations in Lee County, and background to very low concentrations in and offshore of Collier County.

Reports of fish kills suspected to be related to red tide were received from Southwest Florida over the past week from Pinellas, Manatee, Sarasota, Lee, and Collier counties. For more details, please visit and

Over the past week, respiratory irritation suspected to be related to red tide was reported via the Beach Conditions Reporting System and/or the Fish Kill Hotline in Southwest Florida in Pinellas, Sarasota, Lee, and Collier counties. For recent and current information at individual beaches, please visit and for forecasts that use FWC and partner data, please visit

Caloosahatchee Conditions Report (March 21, 2023)

Flows to the Caloosahatchee Estuary had a 7-day average of 1,971 cfs at S-79 with a 7-day average of 1,701 cfs (86%) coming from the lake at S-77. The 14-day moving average flow at S-79 is 1,935 cfs and has been in the optimum flow envelope (2,100 – 2,600 cfs; RECOVER 2020) for 34 days.

View the full report here.


Check out these other useful links for up to date information on water quality issues such as red tide, and blue-green algae.


Red Tide

In Florida, red tide is caused by a microscopic single-celled algae called Karenia brevis or K. brevis. It is present in background conditions throughout the year in the Gulf of Mexico. When natural conditions are right, the organism can form blooms producing a toxin. When red tide is present it can cause coughing, sneezing and teary eyes. People with asthma or chronic respiratory problems should avoid red tide areas. Swimming in water with red tide can also cause skin irritation or eye burning.

Please refer to this fact sheet for more information on red tide.

You can also find lots of useful information on the Captains For Clean Water Red Tide Conditions Page.

Blue-Green Algae

Cyanobacteria/ blue-green algae are a group of organisms that can live in freshwater, salt water or mixed “brackish” water. When conditions are right, such as warm water and increased nutrients, these organisms can increase in numbers and accumulate in some areas of a water body.

Blue-green algae can cause gastrointestinal effects if swallowed. Children and pets are especially vulnerable. If you spot blue-green algae, please contact Kalina Warren, environmental administrator with DEP’s Water Quality Assessment Program for the South Region at 407-897-4177.

You can find more information on blue-green algae using the links below:

Florida Department of Environmental Protection

Vibrio Vulnificus

Vibrio vulnificus is a bacterium that normally lives in warm seawater. Itis part of a group of vibrios that are called “halophilic” because they require salt. Occurring naturally in the warm coastal waters, particularly during the summer months, Vibrio vulnificus has the potential to cause serious illness. People can get infected with Vibrio vulnificus when they eat raw shellfish, particularly oysters. Persons who have wounds, cuts or scratches and wade in estuarine areas or seawater where the bacteria might be present can become ill as well.

Symptoms of Vibrio vulnificus in wound infections typically include swelling, pain and redness at the wound site. Other symptoms of Vibrio vulnificus infection include; nausea, vomiting, abdominal pain, diarrhea, fever, chills and the formation of blistering skin lesions. Individuals experiencing these symptoms should contact a physician immediately for diagnosis and treatment.

Please refer to this fact sheet for more information on Vibrio vulnificus.


For sick, injured or dead sea turtles contact the Sanibel-Captiva Conservation Foundation Sea Turtle Hotline at 978-SAVE-ONE (728-3663) or FWC’s Wildlife Alert hotline at 888-404-FWCC (3922). FWC’s hotline can also be used to report any sick or dead animal.

To report a fish kill, contact FWC’s Fish Kill Hotline at 800-636-0511 or submit a report online. The public can also download the free FWC Reporter app to their mobile device.