Michigan man dies in hospital after snorkeling in Florida Keys, sheriff’s office says

A Michigan man died in the hospital after losing consciousness while snorkeling off the Florida Keys Monday, according to the Monroe County Sheriff’s Office.

Dwaine David Anderson, 73, was swimming on the Grecian Rocks reef off Key Largo with a commercial dive operation when he was found passed out, said Adam Linhardt, sheriff’s office spokesman.

The crew of the dive boat immediately began CPR as the boat rushed back to shore, Linhardt said. Anderson, who is from Crystal Falls, Michigan, was pronounced dead at Mariners Hospital in Tavernier, per the sheriff’s office.

Autopsy results are pending, but the sheriff’s office does not suspect foul play, Linhardt said.

This story was originally published April 1, 2025 at 2:26 PM.

David Goodhue

Miami Herald

305-923-9728

David Goodhue covers the Florida Keys and South Florida for FLKeysNews.com and the Miami Herald. Before joining the Herald, he covered Congress, the Environmental Protection Agency and the Department of Energy in Washington, D.C. He is a graduate of the University of Delaware.