Megalodon sharks lived about to 28 million years ago in the Cenozoic Era. People think that the Megalodon is still out there and many think it's still extinct. Out in the ocean it's searched. They saw if Megalodons still exist they live really deep
megalodon was a prehistoric shark that conservative estimates place at around 16 metres ft) long. For scale, the biggest example of the largest living fish species today -- the whale shark -- was metres ft).