There were only 61 confirmed unprovoked attacks by sharks on humans worldwide in 2004, according to the International Shark Attack File (ISAF). Only seven people people died: including two in Australia and one each in California, Hawaii, South Africa, and Brazil. (The location of the remaining fatality was not specified.)
Still, the threat, however small, is real. And the best way to prepare yourself for a possible shark encounter is to know how to avoid an attack, what to do if you are bitten, and how to help attack victims.
• Stay away from the mouths of rivers after heavy rains, when freshwater fishes and other animals are swept out to sea.
• Swim clear of fishing boats. They often trail fish remains