The first step in the Deep Sentinel program, one of the most ambitious ocean-engineering projects in decades, will be completed this year. This initial step, called Vanguard, will shelter three aquanaut-scientists at depths of 100 meters. Eventually, the project will create a modular underwater habitat system that will let scientists live underwater for weeks at a time.
Ooh. Dunno about the adaptation side of things. I will say that I read the damned thing all in one night. Had to stay home from classes after doing so. Good book, to say the least.