Megalodon

http://en.wikipedia.org/wiki/Megalodon
http://www.grindtv.com/outdoor/nature/post/as-shark-week-looms-so-might-giant-megalodon-shark/
http://news.nationalgeographic.com/news/2013/08/130807-discovery-megalodon-shark-week-great-white-sharks-animals/
http://www.cnn.com/2013/08/07/showbiz/tv/discovery-shark-week-megalodon
http://www.hollywoodreporter.com/live-feed/discovery-responds-shark-week-megalodon-600465
http://www.ottawacitizen.com/entertainment/television/Thursday+Shark+Week+looks+beyond+Megalodon/8761287/story.html