Sharks

vinay mobiles

Currently there are approximately 400 described species of sharks, however new species are being described all the time.I will be discussing habitats, weird sharks, shark attacks,

The oceans contain more than 1,350 million tons of water which represents about 96% of the earth's entire water reserves. Still, for marine life the oceans do not hold the same attraction everywhere. What counts are the largest food supply and the best environmental conditions. Such attractive productive regions include, for example, the relatively flat - only about 200 m deep - layers or shelf regions over the continental shelf. This is where the rivers deposit nutrients into the water which in turn feed the microorganisms which form the basis of the food pyramid. Most of the 500 known shark species live in these biologically highly productive continental shelf areas.

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