Watch: The shark that cleared Ohope Beach / Mystery predator bites shark in half as fisherman battles to reel in beast / Terrifying moment shark sneaks up on diver and tries to bite off his head / Surfer, 61, mauled by shark as swimmers banned from water amid fears beast with strike again / Watch shocking moment vengeful locals track down giant shark and BATTER it on the head after beast mauled tourist's leg / Pregnant shark that disappeared may have been eaten by another shark / Terrifying moment shark sends tourists fleeing from popular Spanish beach / Shark attacks are incredibly rare. But if you do encounter a shark, here's what to do / Tiger shark vomits echidna, shocking Australian scientists / British shark victim, 64, saved by hero pals after 'battling' deadly predator in the waves