NoShark Electronic Shark Deterrent In Action. Emmett Yancey of Aqua Adventures wearing a NoShark Dive Unit. The sharks stay away as he spears his fish then returns to his boat with all of his catch.
Sharks possess a sense called electroreception that allows them to receive very small electrical signals. NoShark works by emitting a high voltage proprietary signal to deter sharks. It is a small device worn around the ankle that works for hours with just one charge.
Our research concluded signal strength alone is not an effective means to deter sharks. Equally, if not more important, is the signal wave form.