Hi im a huge fan and well i know about sharks a lot. i think if it wasn't a Bull Shark or Great White Shark it could have been: Mako Shark a very fast shark that can jump 20 feet out of the water when tried to be caught. it is the fastest shark at um... 60 mph i think... but anyways it eats: Tuna, Swordfish, Mackerel,other sharks. it only attacks when people have it hooked. they will get in boats and attack the people and attack the boats. these are endangered and have hooked teeth. the second shark i think it was is: The Silky Shark, it is a relative of the Great White but smaller. it lives around Alaska and Greenland. it eats fish and seals i think. well ill have a thing about tornadoes next. Bye!