Who set the first Guinness World Record for swimming under ice?

Swimming under ice. On 16 March 2000, Hof set the Guinness World Record for farthest swim under ice on his second attempt, with a distance of 57.5 metres (188.6 feet).[36] Hof's first attempt the day before failed when he began his swim without goggles and his corneas froze solid and blinded him. A rescue diver pulled him to the surface after he passed out.[37] The record has been broken several times since and is 265 feet (81 m) as of 2022.[36][38]"

On 16 March 2000, Wim Hof set the Guinness World Record for thre farthest swim under ice, with a distance of 57.5 metres (188.6 feet).