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Cameron arrived at the deepest point on Earth at 7:52 a.m. Monday, local time, which relates to 5:52 p.m. Eastern Daylight Time (EDT) on Sunday, March 25, 2012.
The Marianas Trench is approximately 200 miles southeast of the Pacific Island of Guam and east of the Mariana Islands (a chain of volcanic mountain) - Guam is located at the south end of the Mariana Islands.
It is considered the deepest part of any of the oceans of the world. The Marianas Trench is about 1,580 miles (2,550 kilometers) long, with a width on average of about 43 miles (69 kilometers). The Challenger Deep, a small valley, is the deepest part of the Marianas Trench. This is where Cameron went exploring.
At the bottom of the Marianas Trench, the pressure is approximately 15,750 pounds per square inch (psi), which is over 1,000 times the atmospheric pressure at sea level -- that's over 7 tons per square inch.
On Cameron's trip, he went alone in the 12-ton lime-green colored, 24-foot (7-meter) tall submarine. The trip downward took about 2 hours, 36 minutes, and he stayed on the bottom for another three hours.
Once on the bottom of the Marianas Trench, the National Geographic article James Cameron Now at Ocean's Deepest Point stated that Cameron ''¦ typed out welcome words for the cheering support crew waiting at the surface: 'All systems OK.''
The National Geographic article is very informative on Cameron's descent into the Marianas Trench. Please read it for additional information.
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