This February 2012 photo, provided by National Geographic, shows explorer and filmmaker James Cameron emerging from the hatch of DEEPSEA CHALLENGER during testing of the submersible in Jervis Bay, south of Sydney, Australia. Earth's lost frontier, the deepest part of the oceans where the pressure is like three SUVs sitting on your little toe, is about to be explored first-hand. It's been more than half a century since man dared to plunge that deep. (AP Photo/Mark Thiessen, National Geographic)
{}