Karenia brevis, the red tide organism, was detected the week ending Dec. 13 at background concentrations at locations in Manatee County.
Also, K. brevis was observed at background concentrations in Hillsborough and Sarasota counties.
Observations further south showed very low concentrations in Charlotte County, background to high concentrations in and offshore of Lee County at 22 sites and very low and medium concentrations in Collier County.
No fish kills suspected to be related to red tide were reported over the past week.
And no human respiratory irritation was reported.
Forecasts for Pinellas to northern Monroe counties showed net southern transport of surface waters and southeastern net movement of subsurface waters in most areas.
The next complete red tide status report will be issued Friday, Dec 18.
For more information, go online to myfwc.com/redtidestatus.