@2dfc6694 Not natural at all.. new divers take quite a few dives before they get their boyancy control in check... For me as an expiernced diver at the top of the expertise scale, yes its very natural for me and i can do back flips and blow bubble rings, and go through very narrow openings with sharp edges comfortably... but it took many years and many hundreds of dives to get to that point.

Even now when i dont dive for a year I need to spend a little time in a pool or shallow water on my first dive just remembering my skills.. They come back quickly, but they really do take some practice.