Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-scuba-diving-0c34018efae0
Why must you exhale through your nose as you descend?
To equalize mask pressure.
- To warm the water
- To equalize mask pressure ✔
- To save breathing gas
Why: Exhaling into the mask equalizes its internal pressure with the water and prevents mask squeeze.
Huh, didn't know that: Exhaling into the mask equalizes its internal pressure with the water and prevents mask squeeze.
Pressure needs a nose for balance.
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References
Answer: To equalize mask pressure. Exhaling into the mask equalizes its internal pressure with the water and prevents mask squeeze.
- Scuba diving en.wikipedia.org/wiki/Scuba_diving
they must periodically exhale through their nose to equalize the internal pressure of the mask
Checked 2026-11-07.
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