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Free divers do but scuba divers do not need to. Scuba divers take their air with them and would have no need to hyperventilate.
They pay the divers to go to the end of the ocean and measure the ocean floor depth before divers dive they take a long endless string keep it up the surface then take it al the way down and cut to where it ends so that when they are finished they measure
2 weeks
It can take up to 200,000 years to reach the surface
about 1,000
Future models of Deep Flight may be able to carry scientists to 11,000 meters below the ocean's surface.
False.
how long is a deep cleaning
About 4 hours!
500 to 1,000 years
Depends on your speed.
It takes about an hour to deep fry an 18 lb turkey!!