A bakery worker carries fresh bread in Cairo, Egypt on August 1, 2021. (Photo by Amr Abdallah Dalsh/Reuters)

The photo project was done for the organization Fishlove and included some other U.K.-based celebrities posing in the buff with critters ranging from bass fish to sharks. Its goal is to raise awareness of how overfishing is destroying the oceans. The release of Gillian's nearly nude pic, which was snapped by French portrait photographer Denis Rouvre, is timed with a European Parliament vote on banning destructive forms of deep-sea fishing in the Northeast Atlantic. The Fishlove organization is trying to rally voters to sign a petition ending deep-sea trawling – which, according to scientists, is negatively impacting the fish population and their habits – and Gillian solicited signatures in a Twitter post. Photo: “Fish Love” Project by Photographer Denis Rouvre. Gillian Anderson. (Photo by Denis Rouvre)

Enthusiast Desirae Hepp, dressed as "Immortan Joe," poses for a portrait during Wasteland Weekend event in California City, California September 26, 2015. The four-day event has a post-apocalyptic theme and is inspired by the Mad Max movie franchise. (Photo by Mario Anzuoni/Reuters)

London Mayor Boris Johnson takes part in a tug of war with members of the armed services to launch the London Poppy Day, outside City Hall, in London, October 27, 2015. London Poppy Day is a street collection event to raise money for serving and retired members of the armed services and their families. (Photo by Stefan Wermuth/Reuters)

British model Iris Law arrives at The Fashion Awards 2019 held at Royal Albert Hall on December 02, 2019 in London, England. (Photo by Lisi Niesner/Reuters)

Models present creations from the Emporio Armani Fall/Winter 2024/2025 collection during Fashion Week in Milan, Italy on February 22, 2024. (Photo by Alessandro Garofalo/Reuters)

Mariam Ashraf, a teacher and “natural hair influencer”, speaks before a phone on a tripod and lights during a live-stream at her home in Egypt's capital Cairo on March 22, 2022. “Shaggy”, “messy”, “unprofessional”. Natural curls were once looked down upon in Egypt, where Western beauty standards favoured sleek, straight locks. Now, things are changing. (Photo by Khaled Desouki/AFP Photo)