as the title reads dont blame sharks for the attack blame yourself for swimming in their waters and acting like a fish that is in trouble
why do sharks attack surfers more then scuba divers?
surfers: make noise of a fish in trouble and the shark picks this up as a fish in distress and there for food thats why they bite they think your food because of the movment
scuba divers: we move easly with easy kicks not like the surfer making tons of noise (well the bubbles make noise but that doesnt attract a shark)
if you want to have better explanations watch this
https://www.youtube.com/watch?v=VqczFNFVjAE