Sergio Cossu’s nude awakening came in 1972, when, at the age of 16 and needing a getaway from his family, he ventured to Santa Teresa Gallura, whose stretch of wild, pristine coastline in northern Sardinia was a mecca for hippies from across Europe.

“It was my first solo holiday away from the traditional family setting,” he said. “There was this feeling of an immense connection with nature; from that point on it was impossible to wear a costume on a beach again. There was less of a taboo about nudity back then but, paradoxically, naturism diminished in the 1990s with the explosion of gyms and this focus on having the perfect body. But over the last 20 years, there has been a revival.”