We have YouReporter video that you just have to see.
It was shot by a local diver named Diego.
He tells us they were diving the Jupiter deep ledge at 130 feet when Randy Jordan shot a fish.
As Diego turned on his underwater camera, there was feedback inside the housing; 5 bull sharks rushed the camera, and attacked Randy's spear gun and a fish attached to it.
Then the sharks went after the other fish he'd just speared, ripping it apart.
Diego believes the feedback set them off.