Patrick Alan Martinec, of North Weymouth, was snorkeling on Alligator Reef off Islamorada when he started signaling for help around 2:20 p.m. on Saturday, March 4, the Monroe County Sheriff's Office reports.
Martinec was brought ashore and to a local hospital where he was later pronounced dead, the office continued. His exact cause of death has yet to be revealed.
Foul play is not believed to have been involved. The investigation is ongoing.
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