Footage from Earth's deepest place
27 March 2012 Last updated at 07:27 BST
Footage has been released from Hollywood director James Cameron's trip 11km (seven miles) down to the deepest place in the ocean, the Mariana Trench.
He made the solo descent in the western Pacific in a submarine called Deepsea Challenger, taking more than two hours to reach the bottom.
Courtesy National Geographic.