In 1956, in the quiet seaside town of Minamata on the southwestern coast of Japan’s Kyushu Island, cats began to behave very strangely. They convulsed, displayed excessive salivation, and gradually lost the ability to walk. Then, dead birds began to fall out of the sky. Shellfish opened and decomposed. Fish also displayed abnormal behaviors, eventually floating up to the surface of the Shiranui Sea. Many of the ailing cats wandered into the sea and drowned. Soon, there were no more cats alive in the area.