sydney-diver
Contributor
I practised when I did my PADI open water about 10 years ago, along with regulator recovery. It gave me a big confidence boost once I'd completed it.
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With reference to the buddy breathing [...] would it be fair to say that it is a form of CESA? i.e the other without the regs, would on the ascent be expected to make the "aaaaaa" on the way up? i know i am going to get shot down for asking, and am pretty sure the ansa is yes, but anyway.....?
its no longer part of the PADI curriculum and not taught at any level. In fact, in Divemaster there was an exercise that had the divers buddy-breath - now "they share a single second stage"