Fans watch James Cameron as deep-sea diver

Canadian director James Cameron has two passions - moviemaking and deep-sea diving.

His Chinese fans were in for a visual treat when a documentary movie recently screened on the mainland had the director of Titanic and Avatar undertake a challenge to dive to the world's deepest known pocket.

Deepsea Challenge 3D, shows Cameron diving around 11,000 meters into the Marianas Trench in the Pacific Ocean.