Thursday, May 27, 2021

The Deepest Diver in the History of Free Diving Goes Below the Ice


Credit...Viktor Lyagushkin

For the past four years, Alexey Molchanov has been the undisputed best all-around free diver in the world. He broke yet another world record last week, this time beneath an icy surface.

This dive was more difficult than most. His wet suit was seven times thicker than normal, which made it more challenging to kick against the positive buoyancy found in the first 10 meters, or approximately 33 feet, of depth.

All that effort demanded he tap into his finite supply of oxygen. To keep warm, he wore a mask, something he typically avoids on deep dives, which meant he had to hold his nose between his thumb and forefinger to equalize instead of relying on a nose clip. Plus, cold water makes equalization of the sinuses, when a diver funnels air into the sinuses to keep them pressurized to prevent head pain and injuries like burst ear drums, extremely challenging.

Within 20 seconds he’d reached 20 meters (66 feet) and puffed his cheeks out to create a vacuum for the remaining air in his lungs to fill. On typical dives, he stores this “mouth-fill” and uses it to equalize without having to worry about leaks. But in water that was between 1 and 2 degrees Celsius, around 35 degrees Fahrenheit, his lips numbed quickly, and he had to clamp them shut with his fingers, his thumb and forefinger on his nose, his middle and ring fingers on his lips.

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