Guillaume Néry is a French freediving champion and an expert in depth. He can dive with a single intake of breath down to -126 m under the surface of the sea. A multiple international record holder, twice a world champion, he recently distinguished himself by accidentally achieving the deepest dive in history, at -139 m deep. To share his world with the widest possible audience, Guillaume dives with his camera and airtight cover in order to bring back a unique testimony of his experience from the depths. Often, his wife Julie Gautier accompanies him, sometimes as his muse, and sometimes taking hold of the camera to capture a moment, or an encounter between Guillaume and a creature from the abyss. Guillaume's quest goes well beyond that of mere sport. Combining aestheticism, performance and exploration, he practises his discipline like an art: his own form of art of living.