Tsunamis are also known as killer waves. A Tsunami is a phenomenon where the ocean waves reaching a height of 100 feet break onto the coastal shores. The Tsunamis cause wide spread destruction along the shores. These enormous waves are created by underwater disturbances such as the earthquakes or volcanic eruption beneath the oceans. The gigantic waves are able to move hundreds of miles per hour from the ocean and hit the shores creating huge loss.
All the Tsunamis are considered dangerous having a potential to destroy every coastline it strikes. There are evidences in history regarding the destructive Tsunamis along the coastal areas. The waves have a succeeding wave which is bigger than the previous one. The dangerous waves are the result of undersea large earthquakes down beneath the Tectonic plates. It happens when suddenly the Ocean floor at a plate boundary rises or falls creating rolling waves.
Most of the Tsunamis occur in the Pacific oceans “Ring of Fire”. This area is active for the Tectonic plates shifting causing volcanoes and earth quakes. At some places Tsunamis do not occur as giant waves but they resemble the surgical tides which is a natural phenomenon in the coastal areas. The 2004 December Indian Ocean Tsunami was the deadliest Tsunami which occurred on Earth killing 230,000 people and creating a wide spread destruction in the coastal areas in 14 countries.