Terrifying Moment '20ft' Shark Is Spotted Swimming Towards Boat

As the arrow of movement gets closer and closer, the camera pans down as something passes underneath.

It takes a minute to squint closer and distinguish what is moving below the surface's ripples, but once your eyes adjust, prepare to squeal, as the screen is quickly filled with the body of a gigantic shark.

As the caption of the video accurately puts it: "Holy s**t."

The account - and world's 'number one JAWS fan community' - has identified the shark as a '20 footer'.

However, many followers have been quick to flood to the comments to joke the shark is, in fact, 25 foot, quoting a well-known line from Jaws (1975).

In the infamous movie, the character of Quint (Robert Shaw) tells Matt Hooper (Richard Dreyfuss) to, 'Shut off that engine'.

Hooper identifies the shark as a '20 footer,' however Quint responds: "25! And three tonnes of him!"

Another user was quick to chime in with a well-known Jaws catchphrase.

"They're gonna need a bigger boat," they said.

"It became a catchphrase for anytime anything went wrong — if lunch was late or the swells were rocking the camera, someone would say, ‘You’re gonna need a bigger boat'."

Other followers commended the footage as being 'great' but needing 'something in the foreground to give [the shark] some scale'.

A few theorised the shark spotted is likely a basking shark.

Another user wishfully stated: "I'd love to see them close up in their own environment."

"Right up until it ate you! Huge!" one responded.

However, a final Twitter user echoed the thoughts of many, quite rightly resolving they don't 'give a damn' about what sort of shark it is apart from the fact the 'thing had the wake of a f**king submarine'.