"Aliens" and "Titanic" helmer James Cameron has set Laeta Kalogridis ("Alexander", "Pathfinder"), who is co-writing "Battle Angel" with him, to write "The Dive," the true, tragic love story of freediver Francisco "Pipin" Ferraras and his wife Audrey Mestre reports Variety.

He plans to direct the film for 20th Century Fox and Lightstorm Entertainment, although "The Dive" won't be the next directing effort for Cameron. That film is a 3-D project entitled "Project 880" which many speculate is either of his long-awaited "Avatar" or "Battle Angel" project.

"Dive," which would begin after that project, will tell the story of two pre-eminent free-divers who, with but a breath of air in their lungs, plunged to unimaginable depths before swimming back to the surface. She died during an attempt to better her world record to 557.7 feet.