When do Sharks Attack Human Beings?

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The sharks that are known to attack human beings are the tiger shark, blue and the grey nurse sharks. The most feared and aggressive of all sharks is the great white shark. The sharks may attack humans if they get attracted by underwater noises, erratic swimming, the presence of a large number of bathers or the glint of jewellery or some other article. But the sharks get highly provoked by the presence of blood. They largely attack during day time and usually about 200 to 300 feet from the shore where the water is comparatively shallow.

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