Terrifying footage has emerged from Mexico of a huge great white shark breaking a shark-diving cage.<br /><br />In the clip, which was filmed on Guadalupe Island, the shark can be seen surfacing to take some bait. <br /><br />It then heads back down and rams the shark cage from where the filmer is recording. <br /><br />Amazingly, one of the bars of the cage breaks and the shark's head enters the cage for a few heart-stopping moments.
