"James Cameron becomes first solo explorer to reach the deepest point of ocean."

He directed "The Abyss" and "Titanic."Why the obsession with the bottom of the ocean?

“The Jacques Cousteau shows actually got me very excited about the fact that there’s an alien world here on Earth,” he said. “I might not go to an alien world on a spaceship someday — that seemed pretty unlikely. But [the ocean] was a world I could really go to right here on Earth that was as rich and exotic as anything I had imagined from reading these books.”