Terrifyingly realistic simulation shows what it would look like to be attacked by a Megalodon

If The Meg movies have left you wanting to know more about the now-extinct, deadly seafarers, then there's a realistic simulation of a big shark attack that may be right up your street.

Estimated to be between 15 and 18 metres long — that's three times the size of the largest recorded great white shark — the Megalodon is estimated to weigh between 48 to 103 tonnes.

These massive sharks populated the oceans approximately 23 to 3.6 million years ago and went extinct 2.6 million years ago, when the Earth entered a phase of global cooling at the end of the Pliocene.

Despite what the Jason Statham-starring film's bonkers theories may suggest - like hiding under a cloud of hydrogen sulfide in the Mariana Trench - there's no chance that the Megaladon could be currently still alive.

I mean, a shark that big we surely would have seen by now?

Although we'll thankfully never encounter this colossal beast in the wild, it is possible to get a sense of how terrifying a Meg attack would be thanks to a realistic simulation.

The video, which was created by artist @aleksey_nz, sees the shark attacking a large ship and sinking their teeth into it before cracking it in half.

A fragment of the sinking ship then takes out the helicopter, plummeting it into the ocean.

And if that's not scary enough, you've got to face a f**king huge shark coming towards you, ready to eat you whole.

Despite confirmation of their extinction, bizarre theories have still been put forth about supposed sightings - including footage of 'evidence' from the Discovery Channel.

Explorers at OceanX have dismantled the theory, however, explaining that if the Megaladon were alive, there would be signs of their presence that are simply not there.

These signs include bite marks on other sharks from attempted attacks, as well as recently shed Megalodon teeth and DNA in sediment and water samples.

"So, no, there's no chance that the Meg is winning the world's best game of hide and seek. But there are many creatures in the ocean that have yet to be discovered." they concluded.

Emma Bernard, an expert at the Natural History Museum in London, also confirmed the Megalodon is 'definitely not alive'.

"It's definitely not alive in the deep oceans, despite what the Discovery Channel has said in the past," Bernard said.

"If an animal as big as Megalodon still lived in the oceans we would know about it."