A tsunami is a natural disaster caused by earthquakes or volcanic eruptions. In fact, tsunamis are divided into groups from 1 to 6 points. 1 point - waves that don’t scary to people, but 6 points are the killer's waves. Now I want to tell you about the Indian Ocean tsunami It was 20 years ago, on December 26, in 2004, a powerful earthquake happened in the Indian Ocean, followed by a tsunami. As a result of a powerful wave, 14 countries were affected. India and Thailand get the most damage. The size of the wave was about 30 meters. This tsunami took thousands of lives — not only locals, but also tourists who were resting at popular resorts. About 230,000 people died , and millions were left they home Museums have been created in memory of the disaster.