“Project Seal” was a top-secret operation between the United States and New Zealand. The Telegraph reports filmmaker Ray Waru uncovered the secret operation while researching buried military files in the National Archives. The project involved testing a “tsunami bomb” during World War II. Military experts decided the flooding of coastal Japanese cities was a second option to the atomic bomb. The plan included detonating a series of 10 offshore blasts to create a 33-foot tsunami capable of flooding a city. In 1944, blasting operations were ordered to clear coral reefs in the Pacific and a naval officer recognized the large waves produced by the operations. The plan was shelved when experts concluded a successful mission would necessitate detonating a 4 million-pounder 5 miles offshore. Fastcast: Gnarly.