Creating a catastrophic tsunami is much more difficult than you think. "Tsunamis" created by underwater atomic tests were insignificant.
Here is a video of the so-called "massive tsunami" created by an underwater atomic explosion which reached a height of 2 meters (6 1/2 feet). Natural waves at Hawaii's Bonzai Pipeline routinely reach over 12 feet.
Here is a video of the so-called "massive tsunami" created by an underwater atomic explosion which reached a height of 2 meters (6 1/2 feet). Natural waves at Hawaii's Bonzai Pipeline routinely reach over 12 feet.