On March 26, 2012, director James Cameron set a record by completing  the first solo dive to the deepest area in the global ocean. This  Friday, with the release of the documentary "Deepsea Challenge 3D", he  is sharing with the world what he has seen down there.
There is  "an alien world right here on Earth. [...] I've seen some pretty  astonishing things at the depths," Cameron says in the documentary,  directed by John Bruno, Ray Quint, and Andrew Wight.
The film,  available to watch in IMAX 3D since August 8 in the United States,  traces Cameron's seven-year project of building his submersible, dubbed  Deepsea Challenger, and riding it to reach the bottom of the Mariana  Trench in the western Pacific Ocean.
Cameron's descent reached a  maximum depth of 10,908 meters (35,787 feet). That depth means if one  were to put the world's highest mountain on this spot, the mountain's  peak would still be more than 2 kilometers beneath the ocean's surface.
A  science geek in his childhood, the Oscar-winning filmmaker was the  third human being to have physically seen the deepest seafloor on Earth.  A prior manned dive was made by two men in 1960, although they only  spent about 20 minutes on the seafloor.
Cameron managed to stay  for about three hours at the lowest depth, shooting 3D video footage and  collecting samples for scientists. The video footage captured images of  what scientists viewed might be never-seen-before species.
Learn more about James Cameron's Deepsea Challenger sub
- The sub is one of a kind to have a vertical form;
- It measures 7.3 meters tall (24 feet), and weighs 11.8 tons;
-  The bright-green sub was made of highly-sophisticated syntactic foam  developed specifically to withstand the pressure at the bottom of the  ocean;
- Its equipment includes LED lights, 3D high-definition cameras, and a mechanical arm to collect samples.

Illustration of the Deepsea Challenger submersible [Photo courtesy of Acheron Project Pty Ltd]
Current status of the sub
In June, 2013, James Cameron donated the sub to Woods Hole  Oceanographic Institution, in Massachusetts. The institution is known  for successfully locating the wreckage of Air France Flight 447.
The sub was transported to New York City earlier this week for exhibit for the premiere occasion of "Deepsea Challenge 3D".
 



