The Coast Guard has found an overturned boat with one person clinging to it. It's unknown if it's the vessel of four missing boaters.
Tampa General Hospital reports they received a call saying the Coast Guard would be bringing someone to their hospital from a boating incident.
The Coast Guard vessel, Tornado, was traveling from Mississippi on a training exercise, but joined in the search.
Coast Guard officials said another boat has left to aid in the search. Officials said if medical attention is needed, a helicopter will be sent out.