Filmmaker Cameron plans record 7-mile ocean dive

A calm James Cameron has broken his own record with the world's deepest solo submarine dive, plunging 5.1 miles (8.2 kilometers) in the Pacific Ocean near Papua New Guinea, the filmmaker said Thursday.

But that's nothing. Later this month he says he plans to descend to the deepest place on Earth.

Cameron is aiming to plunge to the bottom of Challenger Deep in the Mariana Trench of the Pacific Ocean, 200 miles southwest of Guam. It's 6.8 miles (11 kilometers) deep. Humans have been there only once before when a two-man U.S. Navy team went for just 20 minutes in 1960.

The "Avatar" and "Titanic" filmmaker said he wasn't frightened when he dove nearly that far in a practice run Wednesday that lasted 3.5 hours on the bottom.

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