Copyright 2011, The Associated Press
Billionaire adventurer Richard Branson poses atop the Virgin Oceanic Expeditions deep sea submarine, in which Branson, Chris Welsh and others plan to take solo piloted expeditions to the deepest point in each of the world's five oceans, at a news conference in Newport Beach, Calif., Tuesday, April 5, 2011. This first sub, which will carry one person, is almost 18 feet long and capable of reaching depths of about 37,000 feet. (AP Photo/Reed Saxon)