Seven miles is a long way down... more than a mile deeper than Mt. Everest is up. To reach the deepest part of the Mariana Trench, James Cameron had to descend past some pretty amazing milestones on his record-breaking dive. Here's a glimpse.



It’s been more than 50 years since anyone ventured to the deepest spot on earth.



There’s a simple reason.



7 miles is a long way down.



It’ll take James Cameron about 90 minutes to touch bottom. Here’s his descent in one minute.







0-660 ft: 90 percent of ocean life lives here







800 feet: Dive depth of a nuclear submarine.



1,044 feet: Deepest recorded scuba dive







3,300 feet: Last trickle of sunlight.



8,200 feet: Deepest diving whale



12,467 feet: Titanic’s Final Resting Place



25,000 feet: The snailfish….deepest fish ever filmed



29,000 feet: Mount Everest…inverted.



36,000 feet: James Cameron in Challenger Deep.

