However this is one of a few scientific investigations as sharks keep so many other interesting features and extraordinary abilities that were not investigated by scientists but are discovered day by day.

Sharks kill or people kill

"I don't want to look at it" – says the shark and eats its victim. Every shark closes its eyes attacking the prey so that the victim couldn't hurt them. And such action makes the pretext to think that the shark closes its eyes because it can't see the death of live creatures. But people are able to see the death of live creatures and sometimes are even happy to see them.

Sharks are on the way of their extinction. Moreover people eat sharks and they disappear because of people. And this trend is characteristic for all territories of the sharks' living. Almost all divers notice the sudden decrease of the sharks' number.

Why? Because sharks have fins and people make tasty soup from their fins. And the price for the plate of such soup is about 150 dollars. The meat of sharks contains urea and it is impossible to eat it without special processing. And not to worry about the meat of sharks people cut the fins of the live sharks and then throw them outboard and then the shark dies slowly and painfully.

Annually about 100 million sharks are killed usually because of fins. And the countries of the South of Asia make 95% of import of these fins. Nowadays about 350 species of sharks are under the threat of extinction. In Egypt the sharks' hunting is forbidden by law. But this law doesn't stop the local fishermen.

Three species of sharks have become almost extinct. And maybe in 10 years the rules of behaviour when you meet the shark will be something like the medieval rules of behaviour if you meet vampires.

Number  Left-hander