Here are some videos of the tsunami that destroyed some of the cities of Japan. They are terrifying and difficult to watch because of the destruction that's taking place in front of your very own eyes. If you pace close attention, towards the end of the above video, you will see people inside a tilted building. They look very small and are seeing running everywhere. I pray to the heavens asking for them to be spared.
The video below shows lots of giant waves that are approaching the coast at high speed; seen from a helicopter.