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The shark of the most dangerous marine animals and ferocity There are many types of shark in the world and live shark in the majority of the seas and oceans of the world, and the irony is that the shark there are kinds of predators and other types of non-predatory.  Live shark in the seas and oceans for nearly 400 million years old and thus the oldest of the Dinosaurs
The shark does not have the skeleton structure, like many other fish, but has a cartilaginous structure, characterized by the shark grow teeth constantly Valasnan which fall out of the shark compensate with other, you can fish the White Shark discovery of one drop of blood in 100 liters of water and feel the shark small Bmacaih of blood from a distance of five kilometers, and is also able to track the shark voice their prey from a distance of more than 244 meters.
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