When we think of gigantic reptiles from prehistoric periods, we usually tend to immediately think of a T-Rex. But while dinosaurs are often the star of the show, they were far from the only ones. The oceans were big and dark places with all kinds of enormous and insanely deadly creatures lurking around… From the second largest fish in the world, to one of the most formidable predators of the ancient oceans, here are the 20 Biggest Megalodon Enemies that Ever Existed. ► For copyright matters please contact us: top5sfinest@gmail.com