necessarily put yourself at risk as a tourist, but you might be putting the local inhabitants at risk. >> craig boviml inhabitant and a surfer. he leads a group of concerned citizens who believe that chum makes sharks associate people with food. bovim thinks that may be why a shark attacked him three years ago. he remembers it every time he looks at his hands. >> and i can't describe the fear that went through me then. i mean, it's everybody's worst nightmare, and it was busy happening to me. >> he was diving for crayfish when a great white shark came up beside him, disappeared, then returned. >> all i saw was this fin coming towards me at speed, and he just clamped down hard on both my forearms with a crunching sound, and then his body landed on me. i knew i'd been eaten or bitten, and i knew i was-- >> you'd been bitten. you were being eaten. >> well, i don't know if he was still going to try and swallow me, but i knew that i was-- >> but he wasn't letting go. >> no, i was stuck, and i knew i was going to die. then i basically gave up. i just lay there. and he started swimming slowly with me in his