Why don't we arrange an expedition to the bottom of Mariana Trench?

Answer 1

It has been done, but there is so much that we still don't know about the depths of our own oceans. I have often asked the same question, I think that there may be answers to a lot of questions regarding the surface of our planet that could be explained by exploring the depths of her oceans.

Answer 2

A U.S. navy bathyscape already reached its bottom in 1960; a 1995 Japanese probe made what is probably the most accurate measurement of its depth. It is the deepest at 35,798.6 ft/10,911.5 m at the Challenger Deep.

Therefore, it has already been visited, but an expedition open to the public probably wouldn't be created, as to protect the welfare of society. The pressure is much to large due to the vast deepness, and any government wouldn't want to take such a risk.

Answer 3

WE DID!!!

Physical exploration

January 23, 1960: Trieste just before the diveIn an unprecedented dive, the United States Navy bathyscaphe Trieste reached the bottom at 1:06 p.m. on January 23, 1960, with U.S. Navy Lieutenant Don Walsh and Jacques Piccard on board.[1] Iron shot was used for ballast, with gasoline for buoyancy.[1] The onboard systems indicated a depth of 11 521 meters (37, 799 ft), but this was later revised to 10 916 meters (35, 813 ft).[citation needed] At the bottom, Walsh and Piccard were surprised to discover soles or flounder about 30 cm (1 ft)long,[5] as well as shrimp.[citation needed] According to Piccard, "The bottom appeared light and clear, a waste of firm diatomaceous ooze".[5]

The most accurate measurement on record was taken by a Japanese probe, Kaikō (かいこう), which descended unmanned to the bottom of the trench on March 24, 1995 and recorded a depth of 10 911 meters (35 798 ft).[6]

The Woods Hole Oceanographic Institution is planning to send its Nereus hybrid remotely operated vehicle (HROV) to explore the trench in 2007 or 2008.[7]

Answer 4

I dont know how you would construct a vessel that had airspace in it.. that could withstand the pressure. If its 5 miles deep, you would be at about 1650 atmospheres. Something in the neighborhood of 100,000 tons of pressure per square inch.