High tech (acoustic?) shark attractant

[EANx]

I'm thinking of going out to sea and attract pelagic shark species and wonder if anyone knows where I can get hold of an acoustic shark attractant. Is there one on the market? I heard of commercial operators using a little sound machine as opposed to chumming and apparently it works. That's the one I want. Any and all tip-offs appreciated.

 

[geordie-dive-pro]

the only thing i know of that will attract sharks is blood, and electrical current that is given off by fish in distress why not just fill ur bcd pockets with chum and jump in to see how long it will take b4 u attract a shark or 2 milllion lol. why do u want to attract them in the first place? there r loads of dive sites u can go to see them daily all around the world.