Life is scary enough on dry land. If you ever set foot in an ocean, you'll have a better chance of emerging in one piece with a Sharkbanz shark-repellent wristband ($65), says HiConsumption.com. Created by two shark-fearing surfing enthusiasts, the band emits magnetic waves that disrupt the animals' electro-receptors. For the shark, the experience is similar to being in a dark room and suddenly confronting a very bright light: The flight instinct instantly kicks in. The band's patented technology works to depths of 200 meters, and no batteries are required because it's powered by Earth's magnetic field.
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