Academy Award winning director and ocean explorer James Cameron speaks with Rhode Island Democratic Senator Sheldon Whitehouse (L) in front of the one-person submarine Cameron helped to develop, «Deepsea Challenger», as it is displayed it in front of the US Capitol in Washington, DC, June 11, 2013. The sub, which he used to explore the Mariana Trench and is the only human-occupied vehicle currently capable of reachig the deepest parts of the ocean, is on a cross-country journey to Woods Hole Oceanographic Institution in Massachussetts, where it has been donated. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)