Like a lot of photography, making great photos at a swimming event takes the right mixture of skill and luck. But coming away with a unique underwater image is far more difficult, especially if the camera is unmanned, triggered remotely.
While we don't know whether these images were taken through an underwater observation window or fired remotely, we do know they turned out really well.
Christinne Muschi / Reuters
Ye Shiwen of China competes during the women's 200m individual medley final at the 14th FINA World Championships in Shanghai July 25.
Adam Pretty / Getty Images
Vitaly Borisov of Russia (from top), Hayden Stoeckel of Australia, Camille Lacourt of France and David Plummer of the United States compete in heat seven of the Men's 100m Backstroke heats during Day Ten of the 14th FINA World Championships at the Oriental Sports Center on July 25.
Francois Xavier Marit / AFP - Getty Images
France's Yannick Agnel competes in the semi-finals of the men's 100-meter freestyle swimming event in the FINA World Championships at the indoor stadium of the Oriental Sports Center in Shanghai on July 25.
See more great images in the Week in Sports slideshow.