They were the largest sharks ever — up to three times longer and thirty times heavier than today’s great white sharks. Megalodon’s maximum size is inferred because we do not actually have a whole preserved Megalodon. The Megalodon was once a very real shark, but despite the plot of the film, it is no longer alive. By Jonathan O`Callaghan 17 … What is a Megalodon? "Megalodon" is the common name for Carcharocles megalodon*, a truly gigantic predatory shark that went extinct long ago.Thanks to urban legends, and the popularity of movies like The Meg, Megalodon is once again in the public eye.We're here to help separate the fact from the fiction and help dispell the myths about this giant prehistoric shark. Warpaint/Shutterstock. It was a massive shark, and would need large food items to survive. Yes, the Megalodon was a real shark, but no it is not still alive. Even if a vast portion of the ocean depth remains to be explored and that many new species of fish and sea creatures are discovered every year, there is yet no definitive proof that the Megalodon Shark could still be alive. With the new movie “ The Meg” now in theaters, I was wondering what a Megalodon really is. As far as we know, Megalodon is extinct. “People ask me [if the megalodon is still alive] every day,” Dana Ehret, an assistant curator at the New Jersey State Museum, recently told Smithsonian Magazine. The Megalodon was once a very real shark, but despite the plot of the film, it is no longer alive. Their teeth averaged 3 to 5 inches — and were sometimes more than 7 inches long. As far as we know, Megalodon is extinct. - MEGALODONS! We lack any evidence the it is still alive. What is most likely is that the reason for the megalodon's extinction is multifaceted. What this says to the scientific community at large is that, while we believe the megalodon is not still alive, knowing exactly why is not yet possible to assert. These giant sea monsters didn't go extinct! STILL ALIVE Megalodons are World's largest sharks ever! The megalodon shark ( C. megalodon) is widely regarded as both the largest shark to have ever lived on Earth and one of the largest vertebrate predators in history. It's hard to imagine there could still be a viable population of such creatures out there somewhere, living undetected. The Megalodon was once a very real shark, but despite the plot of the film, it is no longer alive. Plants and Animals. My first thought that it was a planet, to be honest with you. It was a massive shark, and would need large food items to survive. The megalodon still alive. In the aftermath of the Discovery Channel’s fake Megalodon documentaries people have questioned not only whether the Megalodon is alive but also whether totally made up it’s existence. The biggest shark ever seen - YouTube Biggest Sharks Ever?! These mysterious creatures are still alive! They were the largest sharks ever — up to three times longer and thirty times heavier than today’s great white sharks. According to scientists, it went “ extinct” 1.5 million years ago..