Sharks are already more than 450 million years on that World. Probably because her Body is so perfect. Sharks can local movements and blood for miles they are as fast as  motor boats – under water . And Sharks have an extraordinary set of teeth . They upper jaw can be slipped out during feeding . These bite-technik use most sharks succesfully : A Tigershark has a bite force of about two tons per square centimeter – a hundert times more than humas.


Sharks are also not stupid :they learn from experience and can change their way of attacking.According to the latest research , they alleged monsters of the seas even have a complex social behavior.


But not the Sharks treatens the Humans, Humans treatens Sharks Weissspitzen-Hochseehai_c_natureplcom_Doug_Perrine_WWF_9a8b2070aa


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