-Tsunami

-A series of waves created when large volumes of ocean water are displaced rapidly on a large scale. Earthquakes and large geological movements above or below the water surface, volcanic eruptions, and meteorite impacts are all capable of causing tsunamis

-Tsunamis occur most frequently in the Pacific but are a global phenomenon; Tsunamis can occur anywhere with large bodies of water, including inland lakes, where a displacement of the underlying soil is likely.

  Tsunamis can form when the seabed, suddenly deformed vertically, takes the place of the water above it. ... In the 1950s it was discovered that great tsunamis can arise from landslides, volcanic eruptions and meteorite collisions

-The disastrous effects of a tsunami can be enormous, killing by submerging hundreds of thousands of people in water for a few hours

-There have been many volunteers who have helped, restored some works, donated charitable meals or helped many other things. Countries also extract funds to help victims of disasters

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