Cressida Bonas
Prince Harry's ex-girlfriend Cressida Bonas posed naked with a shark for an environmental cause. Pictured: Bonas attends the BFI Luminous Funraising Gala at The Guildhall on Oct. 6, 2015 in London. Getty Images/Chris Jackson

Prince Harry's ex Cressida Bonas is an environmentalist.

Prince Harry's model ex-girlfriend recently stripped for a cause. Bonas posed for nude photos with a shark to raise awareness for environmentally unfriendly fishing around the world.

Daily Star shared photos of Bonas during the photoshoot. Michael Jackson's daughter, Paris, and actress Greta Bellamacina also supported the campaign. The snaps were taken by Alan Gelati and commissioned by Brighton seafood restaurant Moshimo.

"Unsustainable fishing practices are not only destroying our beautiful marine life, but also hurting coastal communities, jobs and the people that depend on our oceans," Bonas said about the campaign.

"I’m very proud to be part of this Fishlove campaign to raise awareness for the cause and to do my small part to try to put an end to overfishing, before it’s too late," she added.

Bonas and Chelsy Davy who both dated Prince Harry were invited on his royal wedding with Meghan Markle in May. Both ladies attended. A few days after the event, Bonas shared the most challenging part when attending weddings. For her, it's picking up the right hat.

"Friends are starting to get married, which means the dilemma of British wedding attire. Hats," Bonas wrote. "Why do I find hats so tricky? Tricky to wear, tricky to look at, and extremely tricky for the poor soul sitting in the pew behind. Most of the time I avoid headgear. This can prompt disapproving looks from the older generations."

"Last weekend I attended the royal wedding. The invitation clearly stated that guests must wear hats. Yikes. I opted for a minimal feathered number — and can only hope I got it right," she continued.

In related news, the Duke and Duchess of Sussex had surprisingly encountered Prince Harry's ex Jenna Coleman during their trip to Amsterdam. They were in the same room for breakfast and Coleman was with her boyfriend, Tom Hughes.

According to an eyewitness, Prince Harry looked a bit uncomfortable. In fact, he was super friendly to everyone but totally ignored Coleman when he passed her. According to the source, the incident was "pretty awkward" and some of the guests were commenting on it.