Probably more info than you want, but here you go...From NJscuba.com:
Drowned diver's equipment being checked by Guard || Autopsy confirms cause of death
Posted by the
Asbury Park Press on 07/7/07
BY KATHLEEN HOPKINS
TOMS RIVER BUREAU
POINT PLEASANT BEACH An autopsy has revealed that a recreational diver pulled from the Atlantic Ocean about 50 miles off the coast on Wednesday had drowned, authorities said Friday.
The autopsy showed that the cause of Nathaniel Yangco's death was asphyxiation due to drowning, said Capt. Jeff Harper of the Ocean County Prosecutor's Office.
Yangco, 32, of Tenth Street in Jersey City, was pulled lifeless from the ocean by a dive instructor some time before 1:30 p.m. Wednesday and taken to the Manasquan Inlet Coast Guard station here, Harper said.
Yangco was on a recreational diving expedition on the Jeanne II out of Sheepshead Bay, Brooklyn, when he died, Harper said.
Yangco was at a depth of 140 feet when his diving partner noticed he was having trouble with his regulator, a device that regulates air in and out of the mouth, Harper said.
The Coast Guard is examining Yangco's diving equipment in an attempt to find out what happened, Harper said.
The partner gave Yangco his regulator, which Harper surmised was an extra regulator that divers carry for emergencies. The pair headed for the surface, but at one point, the partner felt a tug and then looked and saw Yangco descending, Harper said.
Then, the partner lost sight of Yangco, surfaced and told the dive instructor what had happened.
The dive instructor went down twice and found Yangco the second time, Harper said.
Harper did not have the name of the partner or the instructor.
"From what we heard, he (Yangco) was not that experienced" at diving, Harper said.