Shark attack at popular beach as swimmer seen waving arms in panic after being bitten / 'They're smart now': Australian fishers are on tenterhooks over shark encounters. Should swimmers be worried? / Surfer killed in shark attack off coast of Western Australia / Surfer feared dead in shark attack after board with bite marks retrieved / Woman suffers serious leg injuries in shark attack at Sydney beach / Philippines shark attack: 2 tourists killed at popular diving spot / Shark attack horror at Australia holiday hotspot as tourist airlifted to hospital after bite / Australia second for shark bites as numbers fall worldwide / Horrifying full injuries of woman who had hands bitten off by shark / Tourist loses both hands while snorkeling in Turks and Caicos after shark attacks during failed photo op