A new video shows veteran free diver Guillaume Nery descending 131ft underwater on only one lungful of air.
If the thought of being deep underwater without any breathing apparatus whatsoever makes you uneasy, this new video, which was released last week, is sure to leave you feeling breathless.
The Deep Joy Y-40 pool at the Hotel Terme Millepini in Padua, Italy, is the deepest man-made swimming pool on Earth. Descending to a depth of 40 meters, the pool is frequently used for filmmaking, scuba training, underwater photography and other similar things.
In the video, Nery, who is no stranger to holding his breath underwater for several minutes at a time, can be seen casually dropping down the pool's various ledges before leaping in to the final, deepest section of the pool - a cylindrical area which leads straight to the bottom.
The water is so clear during his descent that the footage has an almost dreamlike quality to it.
Incredibly, this isn't even Nery's deepest dive - back in 2011 he managed to set a new record by descending 117 meters underwater - that's almost three times the depth of this pool.