Can the megalodon shark still be alive today roaming the deepest parts of our oceans?

Sure

Who knows

Yes, and some other creatures we haven't found yet.

I think so, for sure

Its possible, in all aspects but one.. Food supply.. This is the same argument for the Loch Ness monster.. If the thing is there, what is it eating? So for the Megalodon, where are the whales and great white sharks bitten in two??😷

I am absolutely CERTAIN that it's possible.

It could be, but if its got any sense it will stay down there.