The deepest place on Earth is on the Pacific ocean, SW of Guam, along what’s known as the Mariana Trench. We have the two deepest known places on Earth geolocated on BlooSee:
Challenger Deep (Mariana Trench): http://bloosee.com/r/iddXsU
HMRG Deep (Mariana Trench): http://bloosee.com/r/iSzqEL
Some information from Wikipedia:
“The Mariana Trench is the deepest part of the world’s oceans, and the lowest elevation of the surface of the Earth’s crust. It is located in the western Pacific Ocean, to the east of the Mariana Islands. The trench is about 2,550 kilometres (1,580 mi) long but has a mean width of only 69 kilometres (43 mi). It reaches a maximum-known depth of about 10,916 metres (35,814 ft) at the Challenger Deep, a small slot-shaped valley in its floor, at its southern end.
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At the bottom of the trench, where the plates meet, the water column above exerts a pressure of 108.6 megapascals (15,750 psi), over one thousand times the standard atmospheric pressure at sea level. If Mount Everest, the highest mountain on Earth at 8,848 metres (29,029 ft), were set in the deepest part of the Mariana Trench, there would be 2,076 metres (6,811 ft) of water left above it.
Because the Earth is not a perfect sphere, the trench is not the part of the seafloor closest to the center of the Earth – parts of the Arctic Ocean seabed are at least 13,000 metres closer to the center than the Challenger Deep seafloor.”
You can read the full article here: http://en.wikipedia.org/wiki/Mariana_Trench
And you can also find a bunch of interesting videos on the subject on YouTube (just make sure not to get confused with the Canadian pop-punk band called “Marianas Trench” :-):
http://www.youtube.com/results?search_query=mariana+trench
