Approximately 50 seconds into the following video, you're going to feel a strange lightheaded sensation.
There's no need to be alarmed - it's most probably because you've stopped breathing.
Watching freediver Guillaume Néry bobbing about in the powerful currents of the Tiputa Pass, you can't help but hold your breath, hypnotised by his drifting antics. It's almost as though he's floating above the weak gravity of an alien planet.
Directed and filmed by underwater cameraman Julie Gautier, the video highlights the terrifying, invisible power of the ocean, as unseen channels of water propel Néry at incredible speeds.
You clearly don't need us to tell you not to try this at home. Your bath probably isn't deep enough for one thing.