St Andrews University students skinny dip in the sea as May Day celebrations in St Andrews, Scotland on April 30, 2017. Hundreds of revellers ditched their clothes and bravely jumped into the bitterly cold North Sea. (Photo by Alamy Stock Photos)
Sea lion “Jay” paints a Chinese character reading “the Serpent” at the Hakkeijima Sea Paradise aquarium in Yokohama, suburban Tokyo on January 3, 2013. The event, marking the forthcoming Chinese lunar calender year of the snake was held as part of a New Year's attraction. (Photo by Kazuhiro Nogi/AFP Photo)
A sculpture of a fish made from waste products collected from the sea is displayed during the exhibition Keep The Oceans Clean by art collective Skeleton Sea, at the Torre Madariaga Biodiversity Centre in Busturia, Spain, May 17, 2015. Skeleton Sea, a group of surfers and artists, recycle waste collected from the world's oceans to create artworks and draw attention to the dangers faced from overfishing, pollution and oil spills. (Photo by Vincent West/Reuters)