Inhaling in negative depth

[azapa]

It reminds me of the old "spare air" debate. I also re-watched a video of Herbert caving with a Spare air on his belt.

It would be worth a shot if the alternative was drowning.

[sciencemike]

Sorry to dig up an old thread but I have direct experience with this.

Last year my dive buddy lost his fin in 60-80 feet of water with a current in 10 foot of visibility. I threw on my scuba gear that I always bring in case of emergency, even though this meant the rest of the day was shot.

My dive buddies kept following my bubbles down to me and taking hits off my Octopus to help in the search. I was full scuba and they were freediving. We drained and Al80 pretty quickly doing this. And we didnt find the fin, but they hummed all the way up and everyone was fine.

[trux]

Yes, inhaling after a breath-hold in 60-80 feet indeed poses no problems, and was not really the subject of the question. As already mentioned in the initial post, it is relatively common, and often even drilled in scuba training. The question was more about great negative depths (such as at No Limits), but I think it was already sufficiently cleared above in this thread.