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> More people have been in space than have lived underwater to do science.

The qualifier, "to do science" in the above quote is important. Nuclear submarines stay submerged for up to three months, with normal patrols lasting 3 to 6 weeks.

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While true, you also have to take into consideration that generally submarines are in normal pressure conditions, as they are not really designed to let people in and out all the time. I would imagine that living in a submarine is way more comfortable than what described in this article.

I doubt that a military submarine is more comfortable than the facilities described in the article.

No, you're nice and dry in a military sub. These scientists are living underwater in order to study the reef as efficiently as possible, which means they're out all day in wetsuits and thus need to deal with the havoc that being wet all day eventually wreaks on the body.

That said, I don't quite understand why they don't just wear drysuits then? They're a bit fiddlier to use, but pretty commonplace these days, and don't keep the entire body dry, but that still seem a lot better than keeping none of it.

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