In the men's 50 meter backstroke, Koga Junya from Japan won the champion with 22'85 and Chinese athlete Xu Jiayu ranked eighth with 23'54.

On that day, Chinese swimmer Li Guangyuan missed out on a medal in the men's 200m backstroke final in the Rio 2016 Olympics, coming sixth with 1 minute 55.89 seconds.

And sitting next to that water in the cores was this little Deinococcus radiodurans, doing a backstroke, having its chromosomes blown apart every day, six, seven times, restitching them, living in about 200 times the radiation that would kill you.