Livyatan vs Megalodon! 🌊 Livyatan and Megalodon were two of the most powerful marine predators in Earth’s history, both living during the Miocene epoch, around 10 to 5 million years ago. Megalodon was a giant shark, reaching lengths of up to 18 meters (59 feet). It had massive, serrated teeth—some over 18 cm (7 inches) long—and a bite force strong enough to crush bones. It likely hunted large prey like whales by ambushing them from below. Livyatan, on the other hand, was a huge predatory whale,