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Red tide is drifting north and is now at the mouth of Tampa Bay

High concentrations of the organism that causes red tide has been found in Southwest Florida since Hurricane Ian made landfall. Now, it's slowly moving north.

Red tide is drifting north along the Gulf coast from Southwest Florida and is now being found at the mouth of Tampa Bay.

Red tide, which has been found off the coast of Manatee and Sarasota counties, is inching north. Water samples taken this week by state environmental officials show very low concentrations of the organism that causes red tide was detected along the Sunshine Skyway and the northern tip of Anna Maria Island, where Tampa Bay meets the Gulf of Mexico.

Medium to high concentrations were found along every beach in southern Manatee and Sarasota counties. State officials had issued a health advisory warning last week for all beaches in Sarasota, warning people about respiratory irritation and dead fish.

This week, that warning was extended to beaches in Manatee County, including Bayfront Park, Coquina Beach South, Longboat Pass/Coquina Boat Ramp and the Rod and Reel Pier on Anna Maria Island.

High concentrations have been found south of Sarasota since Hurricane Ian struck in September.

People with respiratory problems should stay away from the water. Residents living along the beach should close their windows and run air conditioning.