My parents have promised me a surf trip to Australia and possibly Bali if I can pull all A's this semester and recently I have been doing some research and alot of people are saying how sharky Australia is and I'm getting a little nervous. Are there alot of sharks in Australia as compared to Florida? How about Bali? What can I do to protect myself? I have heard of a little box like thing that you put near your fins on your board, and it is supposed to emitt electric pulses to ward off sharks do these work? Thanks.