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RE: Recent Underwater Habitat Showcase: Progetto Abissi (Project Abyss)
There's no pressure difference between the inside and outside. These are ambient pressure, like a diving bell. The only big stress on the structure is upward, from buoyancy.
I see, that's not so bad. I skimmed the video a bit closer and found how they get in/out, it's a lot less stressful than I imagined. Alright, maybe I could live under shallow water, still not sold on space.