WARNING: Some may find this simulation disturbing. Viewer discretion advised. NOAA developed this computer animated simulation of a tsunami triggered by an off-shore earthquake. As the seafloor is displaced by the seismic activity, the water above it is displaced too, creating a wave. This animation shows how water quickly recedes at the coast right before the first tsunami strikes, with additional surges of water and waves in the first tsunami's wake. | Weatherboy Weather