From sharks with wheels of teeth, to gargantuan sharks like the megalodon, palaeontologist John Long has traced the long and storied history of these oceanic hunters.Sharks and humans have a complicated relationship.We have long considered them monsters and super predators that should be eliminated for our own safety.But sharks are much more than scary and fearsome.The history of this incredible animal stretches back hundreds of millions of years.From sharks with wheels of teeth, to the ascent of the super predators like the megalodon, palaeontologist John Long has traced the long and storied history of these hunters, asking how they've managed to survive extinction despite everything that's been thrown at them.This episode of Conversations explores science, origin stories, ancient history, sharks, palaeontology, the ocean, climate change, megalodon, hunting and predators.Further informationThe Secret History of Sharks: The Rise of the Ocean's Most Fearsome Predators is published by HachetteTo binge even more great episodes of the ‘Conversations podcast’ with Richard Fidler and Sarah Kanowski go the ABC listen app (Australia) or wherever you get your podcasts. There you’ll find hundreds of the best thought-provoking interviews with authors, writers, artists, politicians, singers, psychologists, musicians, and celebrities.