A Czech man claimed a remarkable feat of human human endurance after he took a dive beneath Switzerland's Lake Sils without a wetsuit and emerged from its 50 meters icy depth.
David Vencl, 40, took a plunge to 52.1 meters in a signle breath. The feat follows David's entry into the Guiness Books of the World Record in 2021 when he swam through the length of a frozen Czech lake.