A Rockwall, Texas, man died while diving off of Key Largo Wednesday, according to the Monroe County Sheriff's Office.
Thomas Pickett, 57, was out at Elbow Reef on a dive vessel operated by the Silent World Dive Center at mile marker 103.2 in Key Largo.
Witnesses told Deputy Derek Paul that Pickett was diving around 20 feet down. His dive buddy said he didn't appear to have trouble during the dive, but others say Pickett surfaced and began to have trouble, according to Deputy Becky Herrin.
He was pulled into the boat, unconscious. He quit breathing so the boat crew began to perform cardiopulmonary resuscitation. He was brought to shore at Garden Cove Drive at mile marker 106 and met by shoreside paramedics.
Pickett was taken to Mariners Hospital, where he was pronounced dead. An autopsy will be done to determine the cause of death.