The waves formed by tsunamis are typically characterized by their long wavelengths, often hundreds of kilometers, and their low wave heights in deep ocean waters. These waves can travel at high speeds across the open ocean, typically around 500 to 900 kilometers per hour. However, when they reach shallower coastal areas, the wave height can dramatically increase and the wave can become extremely destructive. Tsunamis are known for their ability to cause widespread devastation along coastlines due to their immense energy and powerful surges of water.
