People immerse themselves in an ice hole in the Chulym river, with the air temperature at about minus 12 degrees Celsius (10.4 degrees Fahrenheit), during celebrations for the Russian Orthodox Epiphany outside of the town of Nazarovo, Krasnoyarsk region January 19, 2015. (Photo by Ilya Naymushin/Reuters)

Figure Skating, ISU Grand Prix of Figure Skating Trophee de France 2016/2017, Ice Dance Short Dance, Paris, France on November 11, 2016. Alexandra Nazarova and Maxim Nikitin of Ukraine compete. (Photo by Charles Platiau/Reuters)

Giant panda Ji Lan enjoys an iced birthday cake at Nanning Zoo on June 27, 2022 in Nanning, Guangxi Zhuang Autonomous Region of China. Giant panda Ji Lan and her brother Ji Mei celebrated their sixth birthday on Monday in Nanning. (Photo by Yu Jing/China News Service via Getty Images)

Madison Chock and Evan Bates of the United States skate during the Ice Dance, Free Dance program of the 2025 ISU World Figure Skating Championships at TD Garden in Boston, Massachusetts, on March 29, 2025. (Photo by Geoff Robins/AFP Photo)

A swimmer disguised as Superman dives into the lake during the 78th “Coupe de Noel” (Christmas cup) swimming race in the Lake Geneva, on December 18, 2016 in Geneva. More than 1800 participants took part in the event, a 12-meter-long swimming off the Geneva's bank in the 7 degrees Celsius cold water. (Photo by Fabrice Coffrini/AFP Photo)

An Asian elephant swims in a pool with transparent sides at Fuji Safari Park in Susono city of Shizuoka Prefecture on August 8, 2024. Paddling with chunky legs and using their trunks as a snorkel, the elephants at Fuji Safari Park in Japan are taking a dip in their summer swimming pool – with each graceful movement visible thanks to a special see-through tank. (Photo by Yuichi Yamazaki/AFP Photo)

To mark Halloween, 150 teens descended upon a swimming pool in Essex to help mobile network giffgaff recreate the famous Tomatina tomato fight... only this time, with blood and guts. Different takes #giffgaffguts. On October 18, 2013 in Dagenham, England. (Photo by Dave J. Hogan/Stringer for giffgaff)

Polar Bear club swimmers take their annual swim in the sea at Coney Island in New York City on January 1, 2014. (Photo by Curtis Means/ACE/INFphoto.com)