If you are fascinated by sharks like I am, you will love that Discovery Channel has been studying Megalodon. Megalodon is an ancient shark that scientists think is extinct. It would be around 100′ long and has teeth that are each 7″ tall. Imagine a mouth with 276 of these giant, razor sharp teeth!
Some people think Megalodon still exists. There have been rumored sighting all around the world but it is probably like Big Foot or the Loch Ness Monster. The shark did exist but no longer. Check out a few preview videos about the Megalodon and you will learn a lot more once Shark Week arrives.