Megalodon sharks no longer exist. There is no evidence to suggest that these enormous sharks still roam the oceans. Scientists have derived a large amount of information about the characteristics and behaviors of megalodons through fossil records.
Megalodon sharks roamed the oceans from about 16 million years ago up until about 2 million years ago. It is believed that the body structure of a megalodon resembled great white sharks. However, megalodons grew over 50 feet long and fed on whales.
Around 3 million years ago, the conditions of the oceans drastically changed, and, as a result, the average ocean temperature dropped. Scientists assume that megalodons were unable to adapt to these changes and eventually went extinct.