They are known as one of the most dangerous sharks in the world - as footage of this terrifying bull shark attack seems to prove.
Diver Kerry Daniel, 35, was spearfishing off the coast of north Queensland near the Great Barrier Reef when he recorded the moment the predator charged at him.
Fortunately he was able to jam his spear gun into the shark's mouth, leaving the creature writhing in pain while he escaped uninjured.
But as the video shows, a moment more of hesitation and the roles could have easily been reversed.
Daniel, who runs spearfishing channel Liquid Vision, told Daily Mail Australia that he was on a trip with friends when the attack happened.