text: prevention of shark attacks!? my friend dave said if you get attacked by a shark the best thing to do is throw a gas cylinder in its mouth and shoot the cylinder so it explodes! what other preventions can i take? sounds like "dave" is going to be in the next "jaws"??!!  to answer your question: bang-stick's work good. if you are stuck without a "weapon", try to "punch" the shark in the nose, and try to poke his eyes out.   to prevent an attack: don't wear shiny or "flashy" watches or jewelry. sharks are attracted to "blood" so don't have any major cuts or bleeding from wounds ,(or otherwise). they are slightly sensitive to the color "red", so don't wear all red shorts or wet-suit's. if you spearfish, don't carry your catch on your waist.  and if you are on a sinking vessel, in the rigging/mast, and you only have 1 shot at shooting and hitting a scuba tank, wedged into the mouth of a charging white shark, say a prayer to rory sheider and make sure you hit that tank!  lol