On June 8, 2025, Prince William made a significant solo appearance at the Blue Economy and Finance Forum in Monaco, reinforcing his emerging role as a global environmental leader and statesman. Speaking ahead of World Oceans Day, he addressed the urgent threats facing marine biodiversity in front of notable figures, including French President Emmanuel Macron and Costa Rican President Rodrigo Chaves Robles. His speech emphasized that ocean protection is a global imperative, noting that oceans cover 70% of Earth, generate half its oxygen, and support over 3 billion people, yet only 3% are currently protected. people.com

William’s advocacy aligns with his decade-long Earthshot Prize initiative, which fosters practical environmental solutions such as Coral Vita, which restores coral reefs, and Pristine Seas, which has protected marine areas the size of Germany. With King Charles undergoing cancer treatment, Prince William is stepping into a more prominent global role. His efforts include policy advocacy, funding, and innovation to build a sustainable future, as highlighted by a recent dialogue with renowned conservationist Sir David Attenborough. This Monaco appearance marks a milestone in William’s deepening commitment to ocean conservation and environmental leadership.