Recruits who earned a place in the Motivation Platoon struggle through water and muck on their way to becoming a Marine or going into some other line of work, October 7, 1971. (Photo by Eddie Adams/AP Photo)

An artist performs in water during a dress rehearsal for “Amaluna”, a show by Cirque du Soleil, at the Royal Albert Hall in London, Britain January 15, 2016. (Photo by Dylan Martinez/Reuters)

Residents watch the ocean waves crash into the water front, after the passage of Hurricane Irma, in Cuba, Sunday, September 10, 2017. (Photo by Ramon Espinosa/AP Photo)

Richard Coleby of Polaris falls over his quad into muddy waters during day one of the HydroGarden Weston Beach Race on October 14, 2017 in Weston-Super-Mare, England. (Photo by Michael Steele/Getty Images)

Palestinian bedouin shepherds pull their lambs into the water to wash them, in Gaza City, on April 29, 2016. Every year before the beginning of the summer, shepherds wash their herds in the sea. (Photo by Mohammed Abed/AFP Photo)

A Muslim woman wearing a Hijab stands in the waters in the Mediterranean Sea as an Israeli stands nearby on the beach in Tel Aviv, Israel August 21, 2016. (Photo by Baz Ratner/Reuters)

A photographer in Somerset, South West England captured the mating rituals of toads as several males attempt to mate with one female all at once. (Photo by John Waters/NPL)

Girls dressed in traditional costumes run as men throw water on them as part of Easter celebrations during a presentation to the media in Mezokovesd, Hungary, April 13, 2017. (Photo by Laszlo Balogh/Reuters)