Red Tide Update 10-29-2025

Published on October 29, 2025

Scanning electron micrograph of Karenia brevis

Wednesday, October 29, 2025

Provided by: Collier County Pollution Control

Current conditions: Below are the most recent sample results. No reports of respiratory irritation or fish kills have been received. To get the current beach conditions, please visit https://visitbeaches.org.

Forecast: No red tide impacts are expected at this time. To get the red tide respiratory forecast, please visit Gulf Coast Red Tide Respiratory Forecast.

The next sample collection will be Monday, November 3, 2025. Results may be available late Tuesday, November 4, 2025.

More resources:

To report dead fish, call the Florida Fish and Wildlife Fish Kill Hotline at (800) 636-0511.
To speak to a health professional regarding red tide symptoms, call the Florida Poison Information Center toll free at (800) 222-1222.
To view current Health Alerts issued by the Collier County Department of Health, please visit the https://collier.floridahealth.gov/alerts.html.
To access the statewide red tide sampling map, please visit https://gis.myfwc.com/redtidecurrentstatus.
To access the most recent NOAA satellite imagery showing the location of red tide, please visit https://coastalscience.noaa.gov/science-areas/habs/hab-forecasts/gulf-of-mexico/florida-satellite-imagery/.

Sample Results
Sample Date	Location	*Results	Sampling Agency
10/27/2025	Barefoot Beach	NOT PRESENT	Pollution Control
10/27/2025	Vanderbilt Beach	NOT PRESENT	Pollution Control
10/27/2025	Seagate Beach	NOT PRESENT	Pollution Control
10/27/2025	Naples Pier	NOT PRESENT	Pollution Control
10/27/2025	South Marco Beach	NOT PRESENT	Pollution Control

**KEY TO RED TIDE LEVELS—Table provided by Florida Wildlife Research Institute (FWRI)***
Description	*Karenia brevis* cells/L	*Possible Effects (Karenia brevis* only)**
NOT PRESENT – BACKGROUND	0 – 1,000	None anticipated
VERY LOW	>1,000 – 10,000	Possible respiratory irritation; shellfish harvesting closures ≥ 5,000 cells/L
LOW	>10,000 – 100,000	Respiratory irritation; possible fish kills and bloom chlorophyll probably detected by satellites at upper range
MEDIUM	>100,000 – 1,000,000	Respiratory irritation and probable fish kills
HIGH	>1,000,000	As above plus discoloration