Bibliography.
http://news.nationalgeographic.com/news/2011/03/pictures/110311-tsunami-earthquake-japan-hawaii-science-world-waves/
http://en.wikipedia.org/wiki/Tsunami
http://environment.nationalgeographic.com/environment/natural-disasters/tsunami-profile/
http://en.wikipedia.org/wiki/Tsunami
http://environment.nationalgeographic.com/environment/natural-disasters/tsunami-profile/