I have heard this a couple times: as youre coming back to the surface from, lets say, from a 20m dive, you can inhale the spare oxygen in your mask. Does anyone do this? Has anyone heard of this? Thoughts?
Welcome to the DeeperBlue.com Forums, the largest online community dedicated to Freediving, Scuba Diving and Spearfishing. To gain full access to the DeeperBlue.com Forums you must register for a free account. As a registered member you will be able to:
You can gain access to all this absolutely free when you register for an account, so sign up today!