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Jellyfish
jellyfish

Jellyfish

iStockphoto/Thinkstock

Jellyfish were some of the first casualties of the spill, with millions of dead them floating in the Gulf waters and washing up on shore. They may get a bad rap for stinging beachgoers, but jellyfish are some of the oldest known living things on the planet and they're important for many reasons -- one being that they serve as a valuable food source for some of the more beloved sea creatures like the sea turtle. Not only that, but scientists have isolated a jellyfish gene that actually aids in growing healthier sugarcane. And those are just a couple of the reasons why the jellyfish population is important.

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