Billionaire Adventurer Branson Unveils Deep Ocean Dive Submarine

April 5: Billionaire adventurer Richard Branson poses aboard the Virgin Oceanic Expeditions deep sea submarine at a news conference in Newport Beach, Calif. (AP Photo/Reed Saxon)

April 5: Pilot Chris Welsh poses aboard the Virgin Oceanic Expeditions deep sea submarine at a news conference in Newport Beach, Calif. 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)

April 5: Billionaire adventurer Richard Branson, right, and his team member and pilot Chris Welsh pose aboard the Virgin Oceanic Expeditions deep sea submarine at a news conference in Newport Beach, Calif. (AP2011)

April 5: Billionaire adventurer Richard Branson, left, and his team member and pilot Chris Welsh pose atop the Virgin Oceanic Expeditions deep sea submarine at a news conference in Newport Beach, Calif. (AP2011)

April 5: Billionaire adventurer Richard Branson poses atop the Virgin Oceanic Expeditions deep sea submarine  at a news conference in Newport Beach, Calif. (AP2011)

April 5: Virgin Oceanic Expeditions' deep sea submarine, in which billionaire adventurer Richard Branson and others plan to take solo piloted expeditions to the deepest point in each of the world's five oceans, is seen at a news conference in Newport Beach, Calif. (AP2011)

April 5: Billionaire adventurer Richard Branson poses in front of his latest business venture, Virgin Oceanic Expeditions, a deep sea submarine, seen at left rear, in which he and others plan to take solo piloted expeditions to the deepest point in each of the world's five oceans. (AP2011)

Billionaire adventurer Richard Branson, right, and pilot Chris Welsh pose atop Virgin Oceanic Expeditions' deep sea submarine, in which Branson, 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. The first sub, which will carry one pilot, is almost 18 feet long and capable of reaching depths of about 37,000 feet. (AP Photo/Reed Saxon) (AP2011)

April 5: Billionaire adventurer Richard Branson, center, walks past his latest business venture, Virgin Oceanic Expeditions, a deep sea submarine seen at rear aboard a catamaran, in which he and others plan to take solo piloted expeditions to the deepest point in each of the world's five oceans. (AP2011)

April 5: Virgin Oceanic Expeditions' deep sea submarine, in which billionaire adventurer Richard Branson and others plan to take solo piloted expeditions to the deepest point in each of the world's five oceans, is seen at a news conference in Newport Beach, Calif. (AP2011)