Freelance Traveller had one of these back in June 2015 - see
https://www.freelancetraveller.com/features/gallery/neptune/index.html
(!!!WARNING!!! HIGH SPEED CONNECTION STRONGLY RECOMMENDED !!!WARNING!!!)

On Sat, 25 Jul 2020 09:22:19 -0400, xxxxxx@gmail.com wrote:

>This one might interest you if you were looking for some idea of what an
>underwater hab might look like at TL8-9.
>
><goog_1410341503>
>https://www.cnn.com/style/article/proteus-designs-underwater-space-station-research-center-scn/index.html
>
>One of the prime movers on this project is a Cousteau.
>
>I wonder how well sealed environment training for spacers would map to
>sealed environment suits for deep ocean stuff... spacers would not be used
>to the currents, the resistance of water, the possibilities of alien
>aquatic life, etc. but they might understand breathing, careful
>manouvering, and how not to flip out at being in a small shell surrounded
>by a lot of unsurvivable environment.
>
>TomB

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