While conducting magnetic experiments in 2006, the company SharkDefense Technologies discovered how certain metal alloys would keep sharks away by affecting the shark’s electric sense.
After extensive testing on several different shark species, SharkDefense Technologies and HEFA Rare Earth Canada, Co. Ltd are now finally ready to put their product on the market: metal alloy thingamajigs that keep sharks away from fishing gear by generating a small voltage as soon as the product is placed in saltwater.
Unlike popular food fishes like tuna and swordfish, sharks are equipped with an electric sense organ and will therefore stay clear of this type of voltage generating alloys. By placing a small piece of metal alloy near the bait at each hook, you cause sharks to shun your fishing equipment like the plague. This is a win-win situation for fishermen and sharks, since the fishermen will able to focus on more expensive target species and the sharks will avoid getting entangled in fishing gear and die.
Continuously submerged in seawater, the metal alloys continue to emit electricity for up to 48 hours.