How do we know the megalodon is extinct if we explored less than 5% of the ocean?

Question

How do we know the megalodon is extinct if we explored less than 5% of the ocean?

In: 2002

Answer 1

Because even though the megalodon was the largest shark, it wasn’t the [greatest](https://youtu.be/BTPcq2HczVY). Whales didn’t grow to their giant sizes until after (or because of) the megalodon died out. It died because it was outperformed by the great white shark which could do everything it could do at a fraction of the energy cost. If they did survive it would be beacuse they eat the giant modern day whales that are too big for the great whites but then we would see signs of whales being hunted in that method. We know the megalodon is extinct because we know what killed it