Free diver breaks record depth at 170 feet beneath frozen Swiss lake

David Wankel emerged from the depths of Lake Sils in Switzerland on Tuesday after setting a record diving depth of more than 164 feet under the ice without a wetsuit.

A 40-year-old Czech diver’s record for swimming the length of a frozen Czech lake in 2021 after diving vertically up to 170 feet in a single breath has entered the Guinness World Records book.

Wankl dived through a hole in the ice and then re-emerged through the same hole before retrieving a sticker from a depth of 164 feet to prove his achievement. He spit out some blood, sat down for a minute, and then opened a bottle of champagne. Later hospital visits confirmed that nothing was serious.

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A man stands next to Lake Barbora near the town of Teplice, where his friend, Czech free diver David Wankel, swims under the ice on February 13, 2021 in the Czech Republic. (Michael Cijek/AFP via Getty Images)

The Swiss slump in temperatures between 33.8 and 39.2 degrees Fahrenheit gave him a time of 1 minute 54 seconds, said his promoter Pavel Kalaus, which was slightly slower than expected.

“He enjoyed it but admitted he was a little more nervous than usual and had some breathing problems,” he added.

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“Nothing is difficult for them in cold water… lack of oxygen is normal for them. But this was totally different because in cold water it’s really difficult to deal with the pressure in your ears,” he said.

“If you combine all three of these things: cold water, lack of oxygen and problems with working with the pressure, it’s a very unique thing,” he said.