A nude model makes his way home after posing for a photograph by U.S. artist Spencer Tunick, for a project titled “Sea of Hull” in Hull city centre, northern England, July 9, 2016. (Photo by Andrew Yates/Reuters)





A nude model makes his way home after posing for a photograph by U.S. artist Spencer Tunick, for a project titled “Sea of Hull” in Hull city centre, northern England, July 9, 2016. (Photo by Andrew Yates/Reuters)





A nude model makes her way home after posing for a photograph by U.S. artist Spencer Tunick, for a project titled “Sea of Hull” in Hull city centre, northern England, July 9, 2016. (Photo by Andrew Yates/Reuters)





People stand on the Scale Lane Swing Bridge taking part in a mass nude art installation entitled Sea of Hull by New York based artist Spencer Tunick in Hull, England, Saturday July 9, 2016. Thousands of people stripped nude and are painted various shades of blue to participate in a huge installation at various locations in the sea side city on England's east coast, celebrating the city's maritime heritage. (Photo by Danny Lawson/PA Wire via AP Photo)





People manoeuvre into position as they take part in a mass nude art installation entitled Sea of Hull by New York based artist Spencer Tunick in Hull, England, Saturday July 9, 2016. (Photo by Danny Lawson/PA Wire via AP Photo)





Naked volunteers, painted in blue to reflect the colours found in Marine paintings in Hull's Ferens Art Gallery, participate in US artist, Spencer Tunick's “Sea of Hull” installation 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. (Photo by Jon Super/AFP Photo)





People take part in an art installation entitled Sea of Hull by New York based artist Spencer Tunick in Hull, England, Saturday July 9, 2016. (Photo by Danny Lawson/PA Wire via AP Photo)





A nude model makes his way home after posing for a photograph by U.S. artist Spencer Tunick, for a project titled “Sea of Hull” in Hull city centre, northern England, July 9, 2016. (Photo by Andrew Yates/Reuters)





Stephane Janssen, an 80-year-old nude model who posed for a photograph by U.S. artist Spencer Tunick for a project titled “Sea of Hull”, is pictured in Hull city centre, northern England, July 9, 2016. (Photo by Andrew Yates/Reuters)





Nude models make their way home after posing for a photograph by U.S. artist Spencer Tunick, for a project titled “Sea of Hull” in Hull city centre, northern England, July 9, 2016. (Photo by Andrew Yates/Reuters)