When Sir Richard Branson unveiled the Virgin Oceanic submarine, he noted that "More men have been to the moon than have been down further [underwater] than 20,000 feet." To that end, he and an explorer pal will take the submarine to the deepest trenches of the Atlantic, Pacific, Indian, Southern, and Arctic Oceans, feeding first-of-its-kind data and video to Google, to be added to Google's Earth and Maps databases. The deep sea is truly the final frontier on our planet, and Branson wants to make it as accessible as possible.
Virgin Oceanic is a five-journey proposal, in which they'll hit the Mariana Trench (Pacific), Puerto Rico Trench (Atlantic), Diamantina Trench (Indian), South Sandwich Trench (Southern), and Molloy Deep (Arctic). "They" is Sir Richard Branson (whose cojones can only be measured in cubic miles at this point) and Chris Welsh, an American pilot and explorer. The Puerto Rico Trench is the deepest trench known, and has never been explored.