A metal that reacts with seawater to produce an electric field may help keep sharks at bay. But the idea isn't to protect humans from shark attacks. Just the opposite: scientists hope the metal will save sharks from senseless deaths in fishing nets.
An estimated 11 million to 13 million sharks die each year as "bycatch," collateral damage in the hunt for other fish. Sharks grow slowly and can take many years to reach reproductive age, so their populations are being severely impacted by fishing.
In a recent study that offers hope for preventing some of these deaths, scientists from NOAA, four universities, and a research firm that develops shark repellents placed bars of the metal palladium neodymium in tanks holding juvenile sandbar sharks. The sharks avoided the metal bars and weren't tempted by bait suspended within 12 inches of the bars. The study suggests that the metal could be used to ward sharks away from fishing gear.
Palladium neodymium is machinable and reasonably priced. But more study is needed to determine whether it can resist corrosion and remain effective as a shark repellent over long periods of time.
coolest thing i ever seen, but if were fishing and taking sharks food, wouldnt that still mean sharks are going to die due to starvation?
Not necessarily. I mean the coastal food chain only makes up a part of a sharks diet. I mean some sharks eat swordfish and others eat crustaceans. Some eat things in between. Put some of the metal in like 7 feet of water and space it out. I agree this is something to go on for the safety of swimmers, sharks, and fishermen.