Spotted on web:

Scuba diver's cylinder exploded after being hit by a boat
18 July 2005

Wesley Scott Murphy remembers hearing the boat. He remembers knowing he
only had a second. He remembers ducking and the boat's propeller
hitting his oxygen tank.
"All I know is my tank exploded," he said from his hospital room
Saturday night. "I can't remember much after that."
The 35-year-old man from Houston was hit by a 32-foot SeaVee named
Makin' Time, according to the Florida Fish and Wildlife Conservation
Commission, which is investigating.
Murphy, in Florida working on the Downtown at the Gardens retail
construction project in Palm Beach Gardens, had no broken bones and was
in good condition at St. Mary's Medical Center in West Palm Beach on
Saturday night. He was taken by Trauma Hawk to the hospital.
At 3:30 p.m., Murphy was scuba diving with two co-workers at a popular
spot: the waters off The Breakers resort in Palm Beach. He was out
about 30 to 40 minutes, about 100 to 150 yards offshore, in water 7
feet deep, when the accident occurred, he said. He was separated from
his friends, who were snorkeling, officials said.
The occupants of the boat, who weren't identified Saturday, turned
around and helped take Murphy to shore near the hotel, said Willie Puz,
spokesman for the wildlife conservation commission. It's not clear
whether they will face charges.
Palm Beach Police Capt. Keith Robinson said Murphy had bruises and back
pain.
The U.S. Coast Guard, responding to initial reports of two people
missing, also had dispatched a helicopter and two boats to the scene.
"I was told there was a diving point out there," Murphy said. "We went
out to check it out."
Investigators are trying to determine whether a diver-down flag was
displayed. State law requires scuba divers and snorkelers to display a
red flag with a white diagonal stripe whenever in the water.
Boaters are required to make reasonable attempts to stay 300 feet away
from the flags in open waters.
Divers and snorkelers are supposed to stay within 300 feet of their
flags.
Puz encouraged boaters to stay alert and divers to display the
diver-down flag.
"Some people think that they're close to shore and it doesn't pertain
to them," Puz said. "But it is necessary."