While that would be disturbing if it were true, not everything you see on the internet is what it claims to be. People try to appear as outrageous as possible these days for the sake of views. But sharks aren't whales and don't have blowholes on the tops of their heads; The claim of the website you cite simply doesn't make any sense. Far easier to modify a toy, and then claim you killed the last living baby megalodon just to p*** off random viewers.