Megalodon

The Megalodon (Officially Otodus megalodon), meaning "big tooth", is a species of very large shark, the big estimate being up to 16 meters long. It is the biggest shark that ever lived. Megalodon is estimated to have a bite force of about 10.9-18.2 tonnes, which is the world's record for strongest bite force.

It went extinct at least 2 million years ago.

Like the modern great white shark, Megalodon appears to have hunted primarily marine mammals. It may not have been related to the modern great white shark, but a closer relative to the modern makos. This theory states that the Megalodon was probably more closer relative to the mao shark than the great white shark; however, this is still on a debate.