Subject: Re: To infinity and beyond
<<You can have an undersea colony in places where the pressure is modest and there's still sunlight. But no one does, or has tried to, or has any plans to. Because it's not worth the difficulty.>>


"DEEP’s Sentinel subsea habitat system radically expands human access to the ocean. Sentinel fills a technology gap unserved by diving or submersible methods, allowing people to live and work underwater for longer periods and unlock new discoveries."

https://www.deep.com

:-)