An 81-year-old died Monday while with a commercial diving crew in the Florida Keys, according to local media.
Stephen Edward Plopper, of Carmel, Indiana, was swimming with a commercial dive boating around Sand Key Lighthouse off of Key West when members of the crew with the boat noticed him unresponsive in the water.
They immediately began CPR, according to reporting with The Miami Herald. Members of the Coast Guard who responded to the scene also performed life-saving measures and transported Plopper to the Lower Keys Medical Center where he died.