SESK: Stuff Everyone Should Know · sesk.info/scuba-narcosis-ascend
A diver feels nitrogen narcosis. What usually makes it go away?
Slowly ascending to a shallower depth.
- Breathing faster
- Slowly ascending to a shallower depth ✔
- Swimming deeper to adjust
Why: Narcosis depends on depth, so rising usually clears it within a few minutes. The diver must not go deeper again, and should end the dive if they do not feel normal.
Huh, didn't know that: The PADI Deep Diver course has students do a task at the surface and again at 60 feet or more to feel the difference.
Feeling silly at depth? Go up a little. The fish will still be there to laugh later.
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References
Answer: Slowly ascending to a shallower depth. Narcosis depends on depth, so rising usually clears it within a few minutes. The diver must not go deeper again, and should end the dive if they do not feel normal.
- PADI: Nitrogen Narcosis, What Divers Need to Know blog.padi.com/nitrogen-narcosis-what-divers-need-to-know
The next step is to slowly ascend until the diver feels normal again.
Checked 2026-10-12.
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