Beachgoers, business owners hope red tide doesn't get worse

Red tide has since registered in low amounts off Siesta Key Beach. In Venice and Nokomis, it's medium to high counts. An east wind has kept dead fish away, but 30 miles off north Venice, a fish kill of grouper was reported to the FWC. 

FWC: High concentrations of red tide detected in Sarasota County

Red tide is back in the Tampa Bay Area. The latest testing from Florida Fish and Wildlife Conservation Commission confirms high concentrations of Karenia brevis, the red tide organism, along parts of the Sarasota shoreline, including areas around Venice Beach and Caspersen Beach. 

Signs warn of red tide's return to Venice Beach

So far, the levels are registering at "low" to "medium" counts, which means the water still looks clear. That's why officials are posting those signs -- so beachgoers are aware red tide is present, even though they can't see it.

CDC to take closer look at algae's effect on humans

Federal scientists will begin testing at least 50 volunteers who work and live near South Florida’s Lake Okeechobee, where toxic blooms have been particularly intense. They will take blood samples, urine samples, and nose swabs to find out which toxins they may have been exposed to -- and how much.

Pinellas County bans horseback riding near Skyway bridge

A popular activity in Pinellas County is being shut down. The Board of County Commissioners voted Tuesday night to ban horseback riding near the Sunshine Skyway Bridge. Officials say the hobby is damaging seagrass and causing water quality issues.