# How far below sea level could humans survive?

**URL:** <https://boards.straightdope.com/t/how-far-below-sea-level-could-humans-survive/385406>\
**Category:** Factual Questions\
**Created:** [December 24, 2006, 2:56am UTC](https://boards.straightdope.com/t/how-far-below-sea-level-could-humans-survive/385406 "2006-12-24T02:56:21Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Incubus](https://avatars.discourse-cdn.com/v4/letter/i/c68b51/32.png) [@Incubus](https://boards.straightdope.com/u/Incubus)\
**Post date:** [December 24, 2006, 2:56am UTC](https://boards.straightdope.com/t/how-far-below-sea-level-could-humans-survive/385406/1 "2006-12-24T02:56:21Z")

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The Dead Sea is an interesting place. Since it is below sea level, atmospheric pressure there is a little bit higher. That means there is more oxygen.

Let’s pretend we have an incredibly deep valley- say, 6,000 meters below sea level. Could humans survive, or would the air pressure become too high? What would the weather be like?

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**Author:** ![Sapo](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@Sapo](https://boards.straightdope.com/u/Sapo)\
**Post date:** [December 24, 2006, 3:42am UTC](https://boards.straightdope.com/t/how-far-below-sea-level-could-humans-survive/385406/2 "2006-12-24T03:42:24Z")

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You would probably need waders with all the magma and stuff.

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**Author:** ![Don\_t\_Panic](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/don_t_panic/32/398_2.png) [@Don\_t\_Panic](https://boards.straightdope.com/u/Don_t_Panic)\
**Post date:** [December 24, 2006, 3:44am UTC](https://boards.straightdope.com/t/how-far-below-sea-level-could-humans-survive/385406/3 "2006-12-24T03:44:48Z")

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Must… resist… joke… about when and for what amount of time man has visited the deepest part of the ocean…

Phew.

I’m sorry. Carry on.