The harmful algal bloom was detected in background to medium levels up and down the coast in samples taken on Tuesday.
Manatee County is alerting residents to King Tide expected for the next five days. Manatee County Emergency Management said that King Tide is expected between Nov. 15 to 20.
Low concentrations of the toxin were detected this past week at New Pass Dock in Sarasota Bay, on the north end of Lido Key.