Trivia: "Megalodon" means "large tooth." Without a complete fossil/skeleton, scientists used the size of teeth to estimate the shark's actual length/size (which may not be accurate) and concluded it was the largest shark known to have existed. At an estimated 15-18 meters, the Megalodon was about three times the length of a Great White shark.
Trivia: There is an extra scene with Adolf Hitler, Lenin, and the Shepherd's assistant that comes on after the credits roll.