Sharks were already on our planet for 180 million years before dinosaurs. today'sToday's form has not changed for 60 million years. AdaptationShark's adaptation to the environment occurs very slowly, therefore any change in the environment is dangerous for them.

Sharks are at the end of the trophic chain, they. They eat small and large fish, birds and marine mammals, guarding their population. The disintegration of this chain by a smaller number of sharks results in the death of many other animals that are too many. Some species, like the white shark, and the tiger shark, do not have natural enemies, in addition to parasites and pathogens. And of course besides a- other than human beingbeings, of course.

Annually, about 800,000 tons of meat shark aremeat is obtained, so over 100 million sharks are killed worldwide. Because of their fins, about 73 million of which a year are killed. In 60 years, thejust for their fins. The population has dropped drastically in the past 60 years. The fishing practice for the fins is terribly cruel. "Fishermen" cut off the fins of the caught sharks and throw them, still alive, back into the water. A fish that can not swim dies without oxygen.