Jim Bakazan last seen exploring wreckage Saturday.
U.S. Coast Guard crew members are searching for a missing diver in the water south of Key West.
The man was identified as Jim Bakazan by the Coast Guard and Monroe County Sheriff’s Office.
Authorities said Bakazan, 50, was last seen Saturday wearing a black wet suit.
Bakazan was diving off a commercial dive vessel, exploring the wreck of the USS Vandenburg, the Coast Guard said.