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| These creatures of sharpenen teeth hide themselves deep in the sea. Sharks can frighten even the bravest people. This one show us his rows of teeth, threateningly, ready to devour his prey. The teeth of carnivorous sharks are not attached to the jaw, but embedded in the flesh, and in many species are constantly replaced throughout the shark's life; some sharks can lose 30,000 teeth in a lifetime. All sharks have multiple rows of teeth along the edges of their upper and lower
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;)
