Actresses perform during the Olympic flame lighting ceremony for the Paris 2024 Olympics Games at the Ancient Olympia archeological site, birthplace of the ancient Olympics in southern Greece, on April 16, 2024. (Photo by Angelos Tzortzinis/AFP Photo)

Robots of the Zurich Federal Institute of Technology play a football game during the International Telecommunication Union (ITU) AI for Good Global Summit in Geneva on May 30, 2024. (Photo by Fabrice Coffrini/AFP Photo)

Ameca, a humanoid robot developed by the British company Engineered Arts Digital, at the Re:publica trade fair in Berlin, Germany on May 28, 2024. (Photo by dts News Agency Germany/Rex Features/Shutterstock)

Jade Cargill takes out Alba Fyre and Zoey Stark during WWE's Clash at the Castle, Premium Live Event at The OVO Hydro on June 15, 2024 in Glasgow, Scotland. (Photo by WWE/Getty Images)

Germany's Laura Siegemund celebrates with France's Edouard Roger-Vasselin after winning the mixed doubles final against Britain's Neal Skupski and Desirae Krawczyk of the U.S. at the French Open in Paris on June 6, 2024. (Photo by Yves Herman/Reuters)

People wade through a flooded street after Typhoon Fung-wong hit Dagupan City, Pangasinan, Philippines, on November 10, 2025. (Photo by Noel Celisn/Reuters)

Selena Gomez, left, and Taylor Swift arrive at the MTV Video Music Awards at the Microsoft Theater on Sunday, August 30, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)

Only after World War II did the secret spill: Ōkunoshima, located in the Inland Sea of Japan between Hiroshima and Shikoku, was the top-secret site for manufacturing chemical warfare. When the factories were closed down, a number of exotic wild rabbits were seen freely roaming the island. They were assumed to have been the test subjects for the chemical weapons, which the military failed to eradicate when the factory was demolished.