Now to we turn to the disappearance of an experienced scuba diver when he vanished in the shark-infested waters of the Bahamas. The coast guard has now called off the search and local police are... See More
Now to we turn to the disappearance of an experienced scuba diver when he vanished in the shark-infested waters of the Bahamas. The coast guard has now called off the search and local police are declaring him dead. ABC's Matt Gutman has the story. Reporter: This morning, four days after Texas Cairo track ter John petty dove down to a world dominated by sharks and never surfaced his family getting gut-wrenching news. We confirmed with the bohemian police department they did recover some scuba items. With the evidence recovered, they determined that it was a shark attack. Reporter: The 63-year-old also an amateur underwater photographer mysteriously disappeared while shark diving in the Bahamas Sunday but after scouring 4600 miles of sea, the coast guard suspending its search for petty Wednesday without announcing a cause of death. This was just to be one more adventure to go along with his many others. He had such an adventurous spirit and nothing, nothing slowed him down. Reporter: All that was found ABC news learned was the photographer's beloved camera, his mask and diving vest all of them shredded by sharks. Petty had been with the same outfit that took my team shark diving twice in the past year. One, two, three. Reporter: Introducing us into a world ruled by 16-foot tiger sharks. Every dive preceded by a two-hour safety briefing. Make sure it's on there good. Pull on it a couple times. Reporter: Underwater that swirling shark, the sharks mostly ignoring us but curious about that white camera pole and had they got too close a guide putting his own body between us. The charter company telling ABC news overnight it believes petty was likely not killed from a shark attack, but may have died from a drowning first and awaits a full investigation. For "Good morning America," Matt Gutman, ABC news, Miami.
This transcript has been automatically generated and may not be 100% accurate.