http://swissbaync5d7ykaz7dh7v4qjrb4gmen5aj3bogxrcgbb43ij34bjuyd.onion/pdf/Books/Survival/Medicine/oddsnends.htm
While this is both tragic and preventable,
other human (and non-diving) activities hurt them far more. There Has To Be A Better Ending ( The Abyss ) At the end of The Abyss (my favorite of this genre), the characters are at a
depth of 12,000 feet, but not in a submarine; they are in an alien space ship and have
been there a while.