Did you know that the prehistoric mega-shark called Megalodon was thirty times larger than a great white shark? If Megalodon were still alive, it would be able to destroy entire boats and swallow people whole! This nightmare-inducing shark continues to fascinate--and horrify!--shark fans everywhere. In this thrilling book, you'll discover everything there is to know about the famous monster Megalodon and other giant sea monsters from the past. Who was the deadliest marine hunter of its time? Which swimming reptile had a neck four times longer than a giraffe? Where can you see a real-life Megalodon jaw? Find the answers to these questions and so much more inside!