I love this video, and Guillaume Nery is pretty much a super-man. Free-divers in general impress the hell out of me, and I could never do what they do even though I desperately wish I could.
A few things to note: Watch how many times the video “cuts” to another camera. Also, notice that the camera never sees anyone in the shot except Guillaume, despite the shots overlapping in position. What this means is that G did this _multiple times_ on the shoot, not just once! This is also evidenced by the fact that when the camera cuts, he’s in different positions and orientations.
We never see the cameraperson(s), and only one tiny bubble is seen, so whoever is filming is either wearing a re-breather or is themselves another exceptional free-diver!
Guillaume does not go to the bottom of the hole, merely part of the way down. This does not diminish the wonder and skill of what he’s doing, but just to be clear: he’s not free-diving 600 feet deep into the hole. Free divers can go that deep, but only with a weighted shuttle that pulls them down fast enough to reach those depths, and then they free-ascent with an entire safety team standing by. In this case, G uses just his dive weights to nudge his buoyancy into negative and gracefully drifts downward what looks like somewhere from 40 to 75 feet. Still impressive! Even more impressive: He doesn’t drop the weights at the bottom, but instead climbs the reef AGAINST his negative buoyancy!
Suffice to say, Guillaume is awesome, this video is awesome, and I only wish I had the time to dedicate to becoming that skilled.