Check out Carlos -140 dive video and you see one way to equalise with water (at -100 meter ):
http://www.apnea-amsterdam.com/forum...opic,99.0.html
One thing remains a bit strange here is that he puts his noseclip on again at te bottom. Why ???
And how exactly does he expel the water again during ascent ? Maybe the expanding air pushes the water out of his mounth ???
I forgot to ask him, so maybe someone else knows.
