Hollywood movie director, James Cameron, has completed his challenge to dive to the deepest point on the planet.
He successfully reached the bottom of the Mariana Trench in the Pacific Ocean in a specially designed one-man submarine, the Deepsea Challenger.
The trench is a massive 7 miles deep and is 120 times bigger than the Grand Canyon.
The Avatar director is the first person to get there in over 50 years.
Ricky reports on the deep-sea director