The Mariana Trench is a place of incredible mystery, the deepest point in our home planet. Like 97% of Earth's seabed, it remains completely unknown and full of the strangest life you can possibly imagine. Never-seen aliens swim and roam its lunar landscape.
What's next for Virgin? After nightclubs, record labels, gadgets, cellphone carriers, airlines and space ships, Sir Richard Branson is getting into subs. Fifteen miles from his Necker Island, is the Puerto Rican Trench, deepest spot in the Atlantic. They'll dive!