Blue shark is one of the fastest animal

Blue shark, Prionace glauca, easy to distinguish from other sharks in blue staining. Carcharhinidae this family owned, which means that it is a Requiem shark. When you watch the blue shark from the top you will see indigo blue color, while blue sharks observed from the side looks bright blue. White belly and tip of pectoral and anal fins have a dark color. Body elongated and slender blue sharks are usually able to achieve a measure 3.8 meters (13 feet), but the longest blue shark ever found even greater than that, and measured 400 cm. Blue sharks heaviest known weight is 205.9 kg. Very long pectoral fins of blue sharks always have the same size with the length of gill opening date and nozzle tip sharks. Snout long and has a conical shape. Upper lobe of caudal fin blue shark is far greater than the lower, and base of the tail has a weak keel. There is no line in between. All blue sharks have big eyes covered by a nictitating membrane.

Teeth in the upper and lower jaw that is equipped with a valve triangle or smooth jagged edges smooth. Serrated teeth for catching blue sharks facilitate smooth animals, such as squid. Teeth located in the line, and new teeth will smoothly rotate into place immediately after the old tooth was tired, lost or damaged. Blue Shark will only use the first two rows of teeth when hunting, other line only to play into place when needed.

Blue Shark is one of the fastest swimming shark, and can easily keep speed with the most fish species. Body long, slender and perfect for swimming fast as water-resistant to be very small. Large tail fin moving side to side and give a lot of strength for blue sharks. This swim with a sleek and powerful enough to make the leap out of the water. Further study is needed to confirm the maximum speed blue sharks. Some scientists estimate that the maximum speed to about 35 km / hour (22 miles per hour), while others claim that the maximum speed can be as much as 97 km / h (60 miles per hour).

The Blue Shark is found in most of the world, between 50 º and 50 º latitude LU S in offshore waters and coastal waters. It inhabits the Atlantic and Pacific Ocean and the Indian Ocean and liked both temperate and tropical waters. It is believed to be from the widest ranging chondrichthyian and is highly migratory. A blue shark off the coast of New Zealand tagged then found 1,200 miles off the coast of Chile. The Atlantic Blue shark follow warm Gulf Stream and traveled across the Atlantic each year. Their journey starts in the Caribbean Sea and the proceeds along the east coast and then to Europe. They then turned to the south and follow the coastline of West Africa before they turn south west and swim back to the Caribbean sea.

In the West you can see the Atlantic blue sharks from Newfoundland in Canada and down to Argentina. It is also found in the Middle Atlantic and from Norway to South Africa in the Eastern Atlantic. (The Mediterranean included.) In the Indo-West Pacific is spread from East Africa to Malaysia and Japan. It is often seen throughout Australia, New Zealand and New Caledonia. Eastern Pacific blue sharks inhabit the vast territory between the Gulf of Alaska and Chile.

Blue sharks are especially seafood, but also often found near coastal waters, especially where narrow continental landing. In temperate climates blue sharks will often stay close to the water surface in the pelagic region. In the warm tropical waters to dive deeper, because prefer water temperatures between 7 º and 16 º C are usually found further down. Blue sharks known depth range is from 0 to 350 meters, and generally found up to 150 m. Blue sharks will often form large schools. These schools are often composed of men only or women only, and all blue sharks are the same size. We still do not know why they do this, but maybe a way to prevent the attack from larger predators.

A blue shark bait especially in squid and bony fish. Pelagic fish usually formed the basis of Blue shark diet, such as swordfish, tuna, mackerel, cod, herring, and sea raven. Seal, flatfish, and pelagic red crab carcasses Cetacea also part of the normal diet. Blue sharks will often attack fish that are caught by long lines or similar capture tool, which unfortunately means that blue sharks often entangled in the equipment itself. Blue sharks are also known to occasionally eat seabirds and garbage.

Blue shark is believed to be one of the most breeding species of large sharks, but minimum population doubling time is more than 14 years. Viviporous breeding methods, which means that the eggs that develop into puppies in female blue sharks and receive nutrients in the body. After mating with a Blue Shark female can store sperm for several months, sometimes even years. The sperm covered in his oviducal gland where they will be given nutrients to stay alive. When he finally ovulates, fertilization occurs and Blue shark pups born alive after a period of 9 to 12 months of pregnancy term. One liter of blue sharks usually contains 25-50 puppies, large litters but as 135 have been reported. The larger the female blue shark, dog children more in each litter. Very small blue sharks can have litters with no more than 4 birds. A baby blue sharks dog is between 40 and 51 cm (16 inches and 20) long. A female blue sharks will not become sexually mature until it has grown to be at least 2.2 to 3.2 meters (7-11 feet), while the male blue sharks usually due at the time was between 1.8 and 2 , 8 meters (6 and 9 feet). Blue shark exceeds the maximum age of 20 years.

Blue shark always should be treated with caution as there have been reported attacks on humans. Blue shark hunted and sold as food. Meat sold fresh or preserved, and popular fin soup. Hiding from the Blue Shark applied to the skin. Blue sharks are classified as low risk / near threatened with extinction.