Adrian Shine, leader of the Loch Ness Project, travels on the boat towing Munin, an intelligent marine robot, at Loch Ness in Scotland, Britain April 13, 2016. REUTERS/Russell Cheyne 

Adrian Shine, leader of the Loch Ness Project, travels on the boat towing Munin, an intelligent marine robot, at Loch Ness in Scotland, Britain April 13, 2016. REUTERS/Russell Cheyne 

A German family watches the 2014 World Cup soccer quarter-final match between France and Germany during a live television broadcast at the Centre Helio-Marin (Center for Sun and Sea) naturist campsite on the Atlantic coast in Montalivet, southwestern France, July 4, 2014. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT SOCCER WORLD CUP TPX IMAGES OF THE DAY) 

A German family watches the 2014 World Cup soccer quarter-final match between France and Germany during a live television broadcast at the Centre Helio-Marin (Center for Sun and Sea) naturist campsite on the Atlantic coast in Montalivet, southwestern France, July 4, 2014. REUTERS/Regis Duvignau (FRANCE - Tags: SPORT SOCCER WORLD CUP) 

A sign indicates the village of Montalivet, where the Centre Helio-Marin (Center for Sun and Sea) naturist campsite is at, on the Atlantic coast in located in southwestern France, August 23, 2013. The centre, created in July 1950, was the first vacation nudist camp to open in Europe. France is host to some 83 naturist sites where 60% of the holiday makers are foreigners. During the peak summer holiday period, 14,000 people spend their vacation at this nudist campsite on the Atlantic Ocean. Picture taken August 23, 2013. REUTERS/Regis Duvignau (FRANCE - Tags: TRAVEL SOCIETY) 

Francois, a 48 year-old French naturist, jogs on the beach at sunset during his holidays at the Centre Helio-Marin (Center for Sun and Sea) naturist campsite on the Atlantic coast in Montalivet, southwestern France, August 12, 2013. The centre, created in July 1950, was the first vacation nudist camp to open in Europe. France is host to some 83 naturist sites where 60% of the holiday makers are foreigners. During the peak summer holiday period, 14,000 people spend their vacation at this nudist campsite on the Atlantic Ocean. Picture taken August 12, 2013. REUTERS/Regis Duvignau (FRANCE - Tags: TRAVEL SOCIETY) 

A sign near tents indicates the direction to the beach at the Centre Helio-Marin (Center for Sun and Sea) naturist campsite on the Atlantic coast in Montalivet, southwestern France, August 2, 2013. The centre, created in July 1950, was the first vacation nudist camp to open in Europe. France is host to some 83 naturist sites where 60% of the holiday makers are foreigners. During the peak summer holiday period, 14,000 people spend their vacation at this nudist campsite on the Atlantic Ocean. Picture taken August 2, 2013 REUTERS/Regis Duvignau (FRANCE - Tags: TRAVEL SOCIETY) 

Francois, 48, a French naturist, jogs on the beach at sunset during his holiday at the Centre Helio-Marin (Center for Sun and Sea) naturist campsite on the Atlantic coast in Montalivet, southwestern France, August 12, 2013. The centre, created in July 1950, was the first vacation nudist camp to open in Europe. France is host to some 83 naturist sites where 60% of the holiday makers are foreigners. During the peak summer holiday period, 14,000 people spend their vacation at this nudist campsite on the Atlantic Ocean. Picture taken August 12, 2013. REUTERS/Regis Duvignau (FRANCE - Tags: TRAVEL SOCIETY) 

The entrance of the Centre Helio-Marin (Center for Sun and Sea) naturist campsite on the Atlantic coast is seen in this general view taken in Montalivet, southwestern France, August 13, 2013. The centre, created in July 1950, was the first vacation nudist camp to open in Europe. France is host to some 83 naturist sites where 60% of the holiday makers are foreigners. During the peak summer holiday period, 14,000 people spend their vacation at this nudist campsite on the Atlantic Ocean. Sign reads, "Exclusively Naturist Centre". Picture taken August 13, 2013 REUTERS/Regis Duvignau (FRANCE - Tags: TRAVEL SOCIETY) 

Participants run in the 17th annual Wreck Beach 5km Bare Buns Run on Wreck Beach, Vancouver, British Columbia July 21, 2013. The yearly run, held at the clothing-optional Wreck Beach, is aimed at raising public awareness on the wholesomeness of naturism. REUTERS/Ben Nelms (CANADA - Tags: SPORT ATHLETICS SOCIETY) 

A child follows his mother during the "www.inudisti.it" web community's annual gathering on private property at Oasis of Zello naturist resort near Bologna, central Italy, June 22, 2013. The largest Italian nudist web community has what it says are some 40,000 registered members. According to a leader of the web community, Italy's nudist population of around 2 million are often forced to travel abroad to practice nudism due to laws at home banning nudity in public. The community members are campaigning for the government to enact specific laws to cater to the needs of their community. Picture taken June 22, 2013. REUTERS/Max Rossi (ITALY - Tags: SOCIETY) 

A man rests during the "www.inudisti.it" web community's annual gathering on private property at Oasis of Zello naturist resort near Bologna, central Italy, June 22, 2013. The largest Italian nudist web community has what it says are some 40,000 registered members. According to a leader of the web community, Italy's nudist population of around 2 million are often forced to travel abroad to practice nudism due to laws at home banning nudity in public. The community members are campaigning for the government to enact specific laws to cater to the needs of their community. Picture taken June 22, 2013. REUTERS/Max Rossi (ITALY - Tags: SOCIETY) 

A combination photo shows Claudio, 44 years-old and naturist from more than 20 years, posing during the "www.inudisti.it" web community's annual gathering on private property at Oasis of Zello naturist resort near Bologna, central Italy, June 22, 2013. The largest Italian nudist web community has what it says are some 40,000 registered members. According to a leader of the web community, Italy's nudist population of around 2 million are often forced to travel abroad to practice nudism due to laws at home banning nudity in public. The community members are campaigning for the government to enact specific laws to cater to the needs of their community. Picture taken June 22, 2013. REUTERS/Max Rossi (ITALY - Tags: SOCIETY) 

Nudists gather for a rally at the U.S. Courthouse in San Francisco, California January 17, 2013. Nudists gathered prior to a hearing on a lawsuit seeking to block implementation of San Francisco's ban on public nudity. REUTERS/Robert Galbraith (UNITED STATES - Tags: SOCIETY POLITICS) 

Nudists listen to speakers during a rally against banning nudity in parts of the city in San Francisco, California, November 14, 2012. REUTERS/Beck Diefenbach (UNITED STATES - Tags: CIVIL UNREST POLITICS SOCIETY) 

A man, who identified himself as Ocean, walks nude through Civic Center Plaza in San Francisco, California October 30, 2012. Nudists converged on City Hall to protest city Supervisor Scott Wiener's proposal to restrict public nudity in the city. REUTERS/Robert Galbraith (UNITED STATES - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY) 

Inti Gonzalez, 11, carries a sign near nude men at Civic Center Plaza in San Francisco, California October 30, 2012. Nudists converged on City Hall to protest city Supervisor Scott Wiener's proposal to restrict public nudity in the city. REUTERS/Robert Galbraith (UNITED STATES - Tags: CIVIL UNREST POLITICS) 

A woman sets up a sign for a Yoga class at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Bruce Grant swims at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

A man and a woman ride their bicycles at the Bare Oaks Family Naturist park in Sharon June 18, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

A man plays a guitar at the Bare Oaks Family Naturist park in Sharon June 18, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant takes a walk with a park client at the Bare Oaks Family Naturist park in Sharon June 18, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant swims as her husband Bruce jumps into the water at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant looks at the water at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant jumps into the water as her husband Bruce lies on a floating deck at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Bruce Grant dives into the water at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant climbs onto a floating deck as her husband Bruce jumps into the water at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant and her husband Bruce take their dog for a walk at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Bruce Grant works at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant gardens with her husband Bruce at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Bruce Grant gardens at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

A picture of Bruce Grant's children is seen on the wall in his home as he works on the computer at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Bruce Grant swims at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant stands in her home in front of her husband Bruce at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manger Karen Grant speaks with her husband Bruce inside their home at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant walks through the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant stands on her deck at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

A man watches television in his trailer at the Bare Oaks Family Naturist park in Sharon June 18, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

A man watches television in his trailer at the Bare Oaks Family Naturist park in Sharon June 18, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

A dog lays on the ground at the Bare Oaks Family Naturist park in Sharon June 18, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY TPX IMAGES OF THE DAY) 

A man leans on his motorcycle at the Bare Oaks Family Naturist park in Sharon June 18, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY TPX IMAGES OF THE DAY) 

Park owner Stephane Deschenes (L) holds a staff meeting at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

People socialize at the Bare Oaks Family Naturist park in Sharon June 18, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

A sign is seen at the Bare Oaks Family Naturist park office in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park owner Stephane Deschenes walks into the front office at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park owner Stephane Deschenes walks through the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

People stand on the beach at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

A man dives into the water at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manger Karen Grant does laundry as her husband Bruce works inside their home at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

A woman mows her lawn at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant walks through the Bare Oaks Family Naturist park in Sharon June 18, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA) 

Park manager Karen Grant and her husband Bruce take their dog for a walk at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant gardens at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant gardens with her husband Bruce at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Bruce Grant gardens at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant holds a door open at the Bare Oaks Family Naturist park in Sharon June 18, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant gardens with her husband Bruce at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY) 

Park manager Karen Grant and her husband Bruce take a walk at the Bare Oaks Family Naturist park in Sharon June 8, 2011. The International Naturist Federation says "Naturism is a way of life in harmony with nature, characterized by the practice of communal nudity, with the intention of encouraging respect for oneself, respect for others and for the environment." REUTERS/Mark Blinch (CANADA - Tags: SOCIETY)