Could you tell me the dialing code for ? what are the short term and long term effects of prescription drugs On that front, Cameron's mission appears to have been a success: Its robotic arms have taken samples of the Challenger Deep, which is more than 7 miles below the water's surface. On March 26, 2012, Cameron spent several hours exploring Challenger Deep, which is located at the southern tip of the Mariana Trench, about 200 miles southwest of Guam. Using Deepsea Challenger's 3-D cameras, Cameron discovered 68 new species. He's currently working on a 3-D film of his mission.