A large bull walrus returns to the shores of Prins Karl Forland after diving and feeding on clams. (Photo by Paul Nicklen/National Geographic). Svalbard, Norway, 2011

Esther Abad free diving in Cenote Chukum, in the Yucatan peninsula in Mexico on June 13, 2022. (Photo by Wojciech Dopierala/Mercury Press)

People cool off by diving into a swimming pool on a hot summer day in Amritsar, India, on June 8, 2025. (Photo by Narinder Nanu/AFP Photo)

Mongolian Chinese performs a traditional Chinese dance in front of the Olympic Rings located near the National Stadium, the main stadium for the 2020 Tokyo Olympic Games in Tokyo, Japan July 29 2021. (Photo by Androniki Christodoulou/Reuters)

Syrian refugee and Olympic swimmer Yusra Mardini is pictured during a training session in a pool at the Olympic park in Berlin, Germany on April 26, 2018. (Photo by Fabrizio Bensch/Reuters)

A view of sunken tank which promotes scuba diving tourism with its location at an artificial reef of Guvercin Island region of Kas district of Antalya, Turkiye on December 04, 2022. The sunken tank, situated at a depth of around 15 meters, is visible to both seasoned divers and those undergoing basic diving training. (Photo by Mahmut Serdar Alakus/Anadolu Agency via Getty Images)

Photographer Mark Tipple captured the underwater pictures with his friend Mike as the surfer. But the rough waves of the coast of the Cook Islands slammed Mike into the sea bed during the shoot, causing him to slice his skin open and badly bruise his body. Photo: Mike diving beneath a shallow wave. (Photo by Mark Tipple/Caters News Agency)

Michal Navratil of the Czech Republic performs after the men's 27 meter high dive final at the Swimming World Championships in Kazan, Russia, Wednesday, August 5, 2015. (Photo by Denis Tyrin/AP Photo)