re: #238 b_sharp

They can’t?

Deepest dive ever was by a Navy diver off the coast of California in 2007

A Navy diver submerged 2,000 feet, setting a record using the new Atmospheric Diving System (ADS) suit, off the coast of La Jolla, Calif., Aug. 1.

That’s still 3000 feet short of where the welll head is.