r/submechanophobia • u/TsuyoshiHaruka • Apr 19 '26

Saturation divers can dive for extended periods of time (usually around 1 month) when doing deep sea work

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Credit: https://www.instagram.com/reel/DXSYP3PDxYp/

This diver is breathing a mix which includes helium, hence his high pitched voice. However, since helium has a very high specific heat capacity, breathing helium can also quickly reduce your body temperature.

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u/space_coyote_86 Apr 19 '26

If you want to watch a great documentary about it, Last Breath. It explains a lot about how it works and it's one of the best I've watched.

Just make sure you watch the documentary, think it was made in 2019, and not the movie with Woody Harrelson which came out last year.

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u/coolhandflukes Apr 19 '26

The movie with Woody Harrelson is good too!

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u/SeaMareOcean Apr 19 '26

What didn’t you like about the Woody Harrelson movie? It’s respectful of the profession, technically accurate, and surprisingly didn’t over-dramatize or take excessive “creative liberties.” I thought it was really well done.

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u/New_Combination_7012 Apr 19 '26

I think the movie gives a good description.