For the next 13 million years the enormous shark dominated the oceans until becoming extinct just 3.6 million years ago. O. megalodon was not only the biggest shark in the world, but one of the largest fish ever to exist. ... In fact, the word megalodon simply means 'large tooth'.

Has a megalodon ever been found?

Fossil remains of megalodon have been found in shallow tropical and temperate seas along the coastlines and continental shelf regions of all continents except Antarctica.

How many Megalodons are left?

There is simply no room, ecologically speaking, for a megalodon to exist. So, to sum everything up... Megalodon is NOT alive today, it went extinct around 3.5 million years ago.