Over the past century, the Indian Ocean off the Western Coast of Northern Sumatra, Indonesia was struck by one of the 4th strongest earthquakes in 2004. Somalia and the Indian Ocean countries were struck by massive tsunamis that were triggered by this earthquake with a magnitude of 9.0. Over a million of people were left homeless, more than 10,000 villages got destroyed and people got killed. An enormous amount of water was displaced by tectonic plates of violent movements of the earth. Powerful shock waves were also resulted and sent in every direction. The killer waves slammed into the coastline of eleven Indian Ocean countries within hours from the epicenter. As a consequence of it, property got demolished ranging from Africa to Thailand. A huge amount of people got snatched out to sea.

In the Indian Ocean, tsunamis have been quite rare, however, they had been quite apparent in the Pacific. Yet still, the scourges have been generated by every ocean. A lot of countries are at risk. It is also important to consider that the water waves that are caused by sudden vertical movement of a large area of the seafloor are referred to as the tsunamis. During an undersea earthquake, they mostly take place. Their speed can exceed 800 kilometers per hour. The height of the water increases drastically when they reach shallow water. A possible tsunami can be indicated by two natural warning signs. First is the earthquake itself, second followed by a tsunami strike in the minutes. From the coast, the sea often temporarily recedes. A tsunami can also be perceived as a series of great sea waves that mostly caused due to a volcanic eruption, landslide, or an underwater earthquake. In most cases, a giant meteor influence with the ocean can also generate a tsunami.