This is the Megalodon, and it once existed 3 million years ago. Next to the dinosaurs, wiped out 66 million years ago, it is but a stone's throw into our murky past when monsters reigned. Its name means 'giant tooth' but everything about it is gigantic: its exceptional lifespan, each stalking the ocean deep for more than a century, and its pups, born at more than two metres long, having likely eaten their siblings in the womb. Marking a milestone in paleontology, in Big Meg acclaimed conservationist, palaeontologist and explorer Tim Flannery and his scientist daughter Emma tell the story of this enthralling great shark for the first time - what we know about where and how it lived, bred, hunted and died. This is the biography of the ultimate apex predator and a compelling exploration of its awesome grip on the human imagination today.