A man and a young girl were injured when their personal watercraft collided with a boat, officials said.
A 52-year-old man, the operator of the watercraft, was taken to Morton Plant Hospital, where he died, officials from the Florida Fish and Wildlife Conservation Commission said.
A 4-year-old girl was airlifted to Bayfront Medical Center and is in critical condition.
The collision happened off Bay Esplanade in Clearwater Beach.
The investigation is continuing.