There are various natural disasters in the world and tsunami is one of them. Some people call it a tidal wave or a seismic sea wave. The main reason of tsunami is a submarine earthquake, when there is an underwater landslide. However, the volcanic eruptions can also cause it. Some countries and regions are especially prone to this disaster, for example, China, Japan, Chile, Sri Lanka, Thailand, Philippines. The biggest tsunami in the history took place in 1958 at Alaskan Lituya Bay. The force of wave then reached 1720 feet above sea level. Normally, ocean tsunamis reach heights of over 100 feet. Even the mildest walls of water can cause widespread destruction
