ANNA MARIA ISLAND – Red tide has returned to local waters after a two-week respite, according to Friday’s Florida Fish and Wildlife Conservation Commission weekly report.
The toxic algae began appearing in mid-April near Piney Point after 215 million gallons of contaminated water were discharged into Tampa Bay. The water contained the nutrients nitrogen and phosphorus, which act as a fertilizer for red tide.
The discharge was approved by the Florida Department of Environmental Protection to prevent the collapse of a compromised gypsum stack containing the contaminated water. The former phosphate plant – the subject of two pending lawsuits – is in receivership and is slated for closure and the disposal of the remaining contaminated water.
Red tide dissipated in Manatee County from Aug. 30 until Sept. 14, when low concentrations were detected in water samples taken at the Rod n’ Reel Pier in Anna Maria. Very low concentrations were detected at the Longboat Pass boat ramp, and background concentrations were detected at Key Royale (School Key) and the Palma Sola Bay Bridge, according to the report.
No fish kills or respiratory irritation related to red tide were reported in or offshore of Manatee County over the past week, but were reported in Pinellas County to the north and Sarasota County to the south.
Red tide produces a neurotoxin called brevetoxin that can cause respiratory irritation, coughing, and more serious illness for people with severe or chronic respiratory conditions such as asthma, emphysema or COPD, according to the Florida Department of Health.
Health officials recommend that people experiencing symptoms stay away from the water and go inside to an air-conditioned space with closed windows and a clean A/C filter. Wearing masks, especially during onshore winds, is also advised.
Health officials also warn against swimming near dead fish, and advise keeping pets away from dead fish and seafoam, which can contain high concentrations of red tide. Pets are not allowed on Anna Maria Island’s beaches but are allowed on the Palma Sola Causeway on Manatee Avenue.
Officials also warn that consuming shellfish exposed to red tide can cause neurotoxic shellfish poisoning.
Updated red tide forecasts are available at habforecast.gcoos.org and at visitbeaches.org.
