Shiny objects might attract attention (looks like fish scales).
They go for shiny wet-suits on free-divers and shiny steel rings on the all black DIR-divers.
As I understand it, a shark is more attracted to fish oil (fat) in the water than to blood
(that is why you attract sharks with crushed little oily fishes).
As the shark approaches the smell of feeding (blood) may put him in a frenzy.
Most dangerous sharks will swim around, check you out and poke you to feel you out, then maybe take a careful gentle bite to taste weather you are edible/standard-menu. (seldom fatal, most often injuries to lower leg)
Some of the bigger ones may sneak attack you, taking a more violent approach and subsequently leave a larger wound, which can be fatal.
When the shark attacks he goes blind, feeling his way through sensing electrical muscle current in his pray, through sensors in his nose.
This is where there might be a chance to stop him: SharkShield
Wonder if the
http://www.sharkshield.com will interfere with the electronics on rebreathers.
