Published: Jun 30, 2013 7:30 PM EDT

KEY WEST, Fla. (AP) - Authorities are waiting for autopsy results to determine the cause of death of a man who died while snorkeling in the Florida Keys.
The Monroe County Sheriff's Office says 64-year-old Eugene Porter of West Palm Beach died while snorkeling offshore of Key West on Saturday. He was on a commercial vessel operated by Fury Water Adventures. Details of what happened are not yet available.
Porter was taken to the hospital where he was pronounced dead.