India, March 17 -- The US Coast Guard has called off the search for a missing free diver off the coast of Naples. Drake Sweet, 36, reportedly disappeared while free diving 70 miles offshore.

Last week, Sweet was out on a 21-foot personal vessel with a friend when he went down but failed to resurface. A multi-unit search from the Fort Myers Beach and Clearwater Coast Guard Stations was prompted after his friend activated an emergency beacon.

Crews searched deep waters of about 130 feet, and scoured the area by dea and air. However, the coast guard suspended the efforts after searching around 4,275 square miles, Fox 4 reported.

Freediving is a kind of underwater diving where one has to hold their breath instead of using scuba gear. It is...