Some scientists wonder if giant gas bubbles could be sucking ships beneath the Bermuda Triangle. A Hollywood special effects master, armed with a physicist, air compressors, hoses, and a heavy boat, came to the Gulf Coast to prove it could be true. Wednesday, workers re-enacted a science experiment that led to the gas bubble hypothesis. They forced compressed air through an underwater grid, forcing bubbles to the surface and, after five tries, sucking a Sea Ray cruiser under the water. "I knew it was going to sink," said Philip Beck, 12, whose father, Phil, orchestrated the event. "It was going down!" The experiment had been carried out in tubs with tiny boats, but never on the sea with a lifesize boat. "It was doing it out on the ocean. That was the key," said Steve Wilkinson, an executive producer with the BBC, which filmed the event. "It's one thing to test in a tank, but to do it out in the water with currents … is another."The BBC and the Discovery Channel contracted Phil Beck, who owns Awesome FX, a special effects company, and physicist Bruce Denardo to test the theory for a film expected to be released next year. "We're looking at the Bermuda Triangle mysteries with fresh eyes," said BBC Executive Producer Steve Wilkinson. "There is background to some of the myths."