Tsunami

Normal Information
A tsunami is a series of large waves that cannot be surfed. A tsunami can be caused by an underwater earthquake, above water or underwater landslide, a volcanic eruption, a meteor impact, or a huge explosion.

Facts
Unlike normal waves that involve moving water, tsunami waves usually moves by the movement of energy. There is also an even more rare type of tsunami known as a MEGATSUNAMI. A megatsunami is basically just that, a huge version of the tsunami. For a tsunami to be considered to be "mega", it has to be at least 300 feet tall.

Fun Facts

 * The largest tsunami was in Lituya Bay, Alaska.
 * One of the worst tsunamis was the Indian Ocean Tsunami, in 2004.
 * the costliest tsunami was the 2011 Tohoku Tsunami/Japanese Tsunami.
 * There was a lava tsunami 4.3 billion years ago, and it was several miles in height. It was caused by Theia impacting Gaia, which is simply just Earth back then.
 * Sometimes tsunamis can cause secondary disasters, such as nuclear disasters or wildfires.