# Is it really possible for humans to breathe liquid oxygen, like in The Abyss?

**URL:** <https://boards.straightdope.com/t/is-it-really-possible-for-humans-to-breathe-liquid-oxygen-like-in-the-abyss/107650>\
**Category:** Factual Questions\
**Created:** [May 7, 2002, 1:48am UTC](https://boards.straightdope.com/t/is-it-really-possible-for-humans-to-breathe-liquid-oxygen-like-in-the-abyss/107650 "2002-05-07T01:48:19Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![wevets](https://avatars.discourse-cdn.com/v4/letter/w/e9a140/32.png) [@wevets](https://boards.straightdope.com/u/wevets)\
**Post date:** [May 8, 2002, 12:51am UTC](https://boards.straightdope.com/t/is-it-really-possible-for-humans-to-breathe-liquid-oxygen-like-in-the-abyss/107650/21 "2002-05-08T00:51:55Z")

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Damn.

You’re not going to let me in on the joke, are you?

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**Author:** ![KW](https://avatars.discourse-cdn.com/v4/letter/k/35a633/32.png) [@KW](https://boards.straightdope.com/u/KW)\
**Post date:** [May 8, 2002, 1:28am UTC](https://boards.straightdope.com/t/is-it-really-possible-for-humans-to-breathe-liquid-oxygen-like-in-the-abyss/107650/22 "2002-05-08T01:28:30Z")

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If the transition metal in the blood were copper rather than iron, would blood be green?

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