1 / 22

Naked volunteers, painted in blue to reflect the colours found in Marine paintings in Hull's Ferens Art Gallery, prepare to participate in US artist, Spencer Tunick's 'Sea of Hull' installation on the Scale Lane swing bridge in Kingston upon Hull on July 9, 2016. Over a period of 20 years, the New York based artist has created over 90 art installations in some of the most culturally significant places and landmarks around the world including the Sydney Opera House, Place des Arts in Montreal, Mexico City, Ernest Happel Stadium in Vienna and Munich in Germany. / AFP / JON SUPER / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION - NO CLOSE UP SHOTS TO BE REPRODUCED OF INDIVIDUALS INVOLVED IN THE INSTALLATION (Photo credit should read JON SUPER/AFP/Getty Images)

JON SUPER via Getty Images