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endangered sharks

The appearance of sharks on earth can be dated back 400 million years before dinosaurs and terrestrial mammals. And they have survived until today, test face as hard as mass extinctions, very important geological changes or other species that compete with them with the advantage of thousands of years of evolution. But they have a weak spot. Are slow to develop sexually and give birth to few offspring during their lifetime, which means that if the number of individuals decreases abnormally (for example, by overfishing), the shark population there is no time to regenerate and can put them in danger of extinction.

Until 20 years ago were often caught within the trawl fisheries, but posed no danger to the public. However, the decline in catches of species coveted commercially (such as tuna or swordfish) was that the eyes of the fishermen to turn to the sharks, mainly by demand from the Asian market.

French and English fishing practiced a type of cutting off the fins and returning the water, where they died, and they need to move to get water in their gills that allow them to breathe. The reason that only stay with the fins is the famous shark fin soup, mystified by Asians, which is aphrodisiac (it is shown to be false) and a great flavor (which actually provide spices .)

In 1999, the FAO quota approved a plan in which all countries participating catch sharks in order to preserve the species, if it is true that empowered the poorest fishing with traditional gear, unlimited amount.

The situation did not improve the contrary, whenever there was a greater danger of extinction. So in 2007, United Nations has decided to take measures for their conservation, which is not to everyone's liking. Sharks are still seen as a threat, even though only 30 of the 368 known species are dangerous. And while it may seem, there are more Asians who are captured, are English, 39% of the total.

These are the most endangered species: