A shark attacks a boat full of S.A tourists

This is the moment a four-metre great white shark left a group of tourists hanging on for dear life when it bit down on their boat.
Stunning footage shows Czech woman Malvina Rezacova 38, coming within inches of the fearsome predator's jaws at Neptune Islands, off the coast of South Australia.
The daring tourist didn't seem too spooked by the man-eater, luring it around with a string of bait before it gnawed on the boat's back metal cage.