Members of team China perform during the Artistic Swimming Team Free Final at the FINA Swimming World Championships in Gwangju, South Korea, 19 July 2019. (Photo by Antonio Bat/EPA/EFE/Rex Features/Shutterstock)

Ja Kang Song, 71, and Ja Hyun Su, 72, dive for shellfish and are the main breadwinners for their families. In South Korea, 45% of the diving women of Jeju are over the age of 70. Routinely diving to depths of 20m and staying under for an average of two to three minutes, the pressure on the body takes its toll and, like many others, burst eardrums have left Ja Hyun Su deaf. Each season, between seven and 10 women die diving the waters around Jeju Island. (Photo by Andy W. Langton/Age International)

This picture taken with an underwater camera shows Japan' s Yumi Adachi competing in the Mixed Duet technical final during the synchronised swimming competition at the 2017 FINA World Championships in Budapest, on July 17, 2017. (Photo by Bernadett Szabo/Reuters)

A tattoo showing the Olympic rings is pictured on the leg of Mexico's Joana Jimenez Garcia during the Women Solo Technical Preliminaries, at the FINA World Championships, in Budapest, Hungary on June 17, 2022. (Photo by Marton Monus/Reuters)

Anita Alvarez of the U.S. receives medical attention during the women's solo free final during FINA World Championships at Alfred Hajos Swimming Complex in Budapest, Hungary on June 22, 2022. (Photo by Lisa Leutner/Reuters)

Scuba divers during an ice diving class at the Sea Frogs scuba diving center in the Russian Far Eastern city of Vladivostok on January 30, 2022. The air temperature is –11°C (12.2°F), the water temperature is –2°C (28.4°F). Scuba divers undergo theoretical and practical training in ice diving and perform dives in the open water during the day and the night time as part of the Ice Diver NDL special program. (Photo by Yuri Smityuk/TASS)

Asbjørg Nesje from Norway is a participant and trains in front of the Opera House in Oslo, Norway, on August 25, 2023, one day before the 2023 World Championship in Døds Diving (Death Diving). According to the organisers, Døds is “a form of extreme freestyle diving from heights jumping with stretched arms and belly first, landing in a cannonball or a shrimp position”. (Photo by Javad Parsa/NTB via AFP Photo)

Nicolo Martinenghi of Italy competes in the Men's 50m Breaststroke Final on day six of the 2022 FINA World Short Course Swimming Championships at Melbourne Sports and Aquatic Centre on December 18, 2022 in Melbourne, Australia. (Photo by Daniel Pockett/Getty Images)