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Sharks are very important to the natural order of marine life. Since they are the fiercest of marine animals, they prey on other marine wildlife. The sharks prey on the marine wildlife that are weaker than them and in turn, allow the stronger ones to pass on their genes to make new species of fish. This in turn, would keep the balance and order of the ecosystem under the water. If sharks were to be killed and lessened, then this balance will be disrupted. 
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