Is the largest shark in the history of the earth still lurking out there somewhere? Officially, the megalodon became extinct 2.6 million years ago - but unofficially, gigantic beasts are regularly spotted in the oceans that make our hair stand on end! Could it be that the colossus from prehistoric times has somehow survived? What is the story behind the strange photograph showing a megalodon off the South African coast? Why did several fishermen swear that they escaped the huge predator by the skin of their teeth? And above all, can we trust the disturbing pictures of megalodons that keep appearing on the web?