The Titanic" and "Avatar" film director James Cameron has just completed his latest daredevil filmic challenge to the deepest part of the sea and broke a world record into the bargain.

On a solo dive, Cameron set off in a very cosy, specially designed 12 ton lime green submarine, called The Deep Sea Challenger. Where he travelled an amazing 36,000 feet down to the Mariana Trench. This is known as the earth's, deepest point, near the Pacific Island of Guam. The trip took 2 hours and was 37 minutes faster than the previous record.

The exploration is a joint project by Cameron, the National Geographic Society, and watchmaker Rolex and is designed to expand knowledge of unknown portions of Earth.