TSUNAMIS

Tsunamis are gigantic waves caused by mass displacements of water out at sea. When water levels are shifted due to underwater tectonic activity, explosions, or even meteors crashing then the displaced water forms a wave which gains speed and amplitude as it approaches shallow coastal water. Tsunamis are not the same as rogue waves which are caused by different means and usually occur far out at sea. They can devastate coastal communities especially in JapN which has almost 200 recorded incidents of tsunamis.

I'm not sure if this is actually a tsunami but it's an awesome video so I'm going to post it


http://www.youtube.com/watch?v=AlPqL7IUT6M&feature=youtube_gdata_player