"In trunks, the cold really bites hard and you glide through the water a lot less."

"It’s abominably tough. It’s mind-blowing. It’s not just because of the layer of ice over your head. It’s also the physiological reaction to a long apnea in icy water. The body reacts very strongly." 

Said Arthur Guérin-Boëri, 37, quoted in "Diver sets world record for under-ice swim on single breath" (London Times). He swam finless and without a wetsuit for 105 meters. 

We're told: "In a discipline with mixed genders, he beat the 103m record held by Johanna Nordblad of Finland." Some of the commenters over there are questioning the term "mixed genders." Considering the multiplicity of gender, wouldn't all sports include mixed genders? The distinctiveness here is that both sexes participate in the same event. In the effort to appear enlightened, you can trip over yourself.