Amazing stuff. How on earth do these guys know that they can make it back to the surface? I am looking at doing a free diving course in december but I dont think I will be pushing myself to those extremes. I remember watching another youtube vid a while ago of a free diver doing The Arch at Dahabs Blue hole. That was pretty impressive also.
Good link.
Stew
It is amazing, especially when you figure they had to do more than one take to get all the camera angles. By my count they had to do it at least six times and probably more to get all the footage. Very cool.
Steve
Front page article on the subject a couple of weeks ago here with some discussions. There was also another thread a couple of days before that one....