The Whale Shark

The whale shark, Rhincodon typus, is a slow moving filter feeding shark and the largest fish species are still present. The largest confirmed individual has a length 12.65 meters (41.50 ft) and weigh more than 21.5 tonnes (47,000 lb), and there are unconfirmed reports of much larger whale shark. Individual claims of more than 14 meters (46 feet) and weigh at least 30 metric tons (66,000 pounds), which is not normal. The whale shark has many entries for slim size in the animal kingdom, especially far the largest non-mammalian vertebrates living, many dinosaurs biggest rival in weight. This is the only member of the genus Rhincodon and family, Rhincodontidae (pronounced Rhiniodon and Rhinodontidae before 1984), owned by the subclass Elasmobranchii in the class Chondrichthyes. Species originated about 60 million years ago.

The whale shark is found in tropical and warm oceans and lives in the open sea with around 70 years of age. Although whale sharks have very large mouths, as filter feeders they feed mainly, though not exclusively, on plankton, which are microscopic plants and animals. However, the BBC program Planet Earth filmed a whale shark feeding on a school of small fish. The same documentary film shows footage from the time of his arrival coincided with the whale sharks mass spawning shoal of fish and eat in cloud produced from eggs and sperm.

This species is distinguished in April 1828 after harpooning of 4.6 meters (15.1 ft) specimen in Table Bay, South Africa. Andrew Smith, a military doctor associated with British troops stationed in Cape Town, described it in the following year. The name "whale shark" comes from the physiology of fish, as large as the number of whale species and many species of filter feeders like whales.

Sea whale shark inhabits all tropical and warm-warm. Primarily pelagic, seasonal feeding aggregation occurs in some coastal areas such as the southern and eastern parts of South Africa; Gladden Spit in Belize, Ningaloo Reef in Western Australia; great Rann of Kutch in India, Utila in Honduras, Southern Leyte. Donsol, Pasacao and Batangas in the Philippines, off Isla Mujeres and Isla Holbox in the Yucatan, Mexico, National Park Ujung Kulon in Malaysia, Nosy Be in Madagascar Off Tofo Reef near Inhambane in Mozambique, Tanzania and the islands of Mafia, Pemba, Zanzibar and, very rarely, Eilat, Israel and Aqaba, Jordan. Although typically seen offshore, have been found closer to land, entering lagoons or coral atolls, and near the mouth of the estuary and river. Coverage is generally restricted to about ± 30 ° latitude. It is capable of diving to depths of 1,286 meters minimum (4,219 ft), [6] and migrate. On 7 February 2012, the huge whale shark found floating 150 kilometers (93 miles) off the coast of Karachi, Pakistan. Length of the specimen is said between 11 and 12 meters (36 feet and 39), weighing around 7,000 kg (15,000 lb).

In 2011 the largest aggregation of whale sharks ever recorded reported from Mexico's Yucatan coast, where more than 400 animals together in one place to feed on the seeds of small skipjack, Euthynnus alletteratus.

As a filter feeder has a wide mouth that can reach 1.5 meters (4.9 feet) wide and contains 10 filter pads and between 300 and 350 rows of tiny teeth. It has five large pairs of gills. Two small eyes are located at the front of the shark head wide, flat. Most body gray with a white belly, protruding buttocks conducted three along each side of the animal and the skin is marked with boxes pale yellow spots and underlined. The spots are unique to each individual and are useful for counting populations. Her skin can reach 10 centimeters (3.9 in) thick. The shark has a pair each of dorsal and pectoral fins. Teen Tails' has a larger upper than lower fin while the adult tail into semi-semi moon (crescent shaped). Spirakel just behind the eye.

The whale shark is the largest Cetacea non-animal in the world. The average size of adult whale shark estimated to be 9.7 meters (31.82 ft) and 9 tonnes (20,000 lb). Largest verified specimen was arrested on the 11th of November, 1947, near Baba Island, in Karachi, Pakistan. Was 12.65 meters (41.50 feet) long, weighed more than 21.5 tonnes (47,000 lb), and has a thickness of 7 meters (23.0 feet). Stories are much larger specimens - collected from 18 meters long (59 ft) and 45.5 tonnes (100,000 lb) are not uncommon in the popular shark literature - but no scientific records support their existence. In 1868 the Irish natural scientist Edward Perceval Wright obtained several small whale shark specimens in the Seychelles, but claimed to have seen specimens of more than 15 meters (49.2 feet), and talks about the reports of specimens over 21 meters (68.9 feet) .

In a 1925 publication, Hugh M. Smith describes a large animal stuck in bamboo fish trap in Thailand in 1919. Shark was too heavy to pull ashore, but Smith estimated that the shark was at least 17 meters (56 feet) long, and weighs about 37 tons (82,000 pounds). These measurements have been exaggerated to 43 tonnes (95,000 lb) and more precisely 17.98 meters (58.99 ft) in the last few years. A shark caught in 1994 from Tainan County, southern Taiwan reportedly weighed 35.8 tonnes (79,000 pounds). There has even been claims of whale shark to 23 meters (75 ft) and 100 tonnes (220 000 GBP). In 1934 a ship named Maurguani find a whale shark in the Southern Pacific Ocean, in violation, and the shark consequently became stuck on the bow of the ship, should by 4.6 meters (15.1 feet) on one side and 12.2 meters (40.0 ft) on the other side. There is no reliable documentation available for this claim, and they will "fish story".

The Tiger Shark

Tiger shark, Galeocerdo Cuvier, is a Requiem shark species and the only member of the genus Galeocerdo. Generally known as sea tigers, tiger sharks are relatively large macropredator, can reach a length of more than 5 m (16 ft). It is found in many tropical and subtropical waters, and it is very common around central Pacific islands. Its name comes from the dark lines in the body that resembles a tiger pattern, which fade as the shark adult.

Tiger sharks are hunters, most solitary evenings. Diet includes a wide range of prey, from crustaceans, fish, seals, birds, squid, turtles, and sea snakes to a dolphin and small sharks and even the other. Tiger shark is considered to be near threatened species due to finning and fishing by humans.

While the tiger shark is considered to be one of the most dangerous sharks to humans, low-level attacks according to researchers. Tiger is the second in the list of recorded attacks on humans, with the first great white shark. They often visit shallow reefs, harbors and channels, creating a potential meeting with the man.

Tiger shark is often found close to the coast, especially in tropical and subtropical waters around the world. Along with the great white shark, Pacific sleeper shark, Greenland shark and sixgill shark, shark tiger shark is one of the largest remaining. Behavior, particularly nomadic, but is guided by warmer currents, and it remains close to the equator during winter. It tends to stay in deep waters that line reefs, but does not move to channel to pursue prey in shallow waters. In the western Pacific Ocean, sharks have been found as far south as far as northern Japan and New Zealand. A Tiger Shark marked in the Caribbean has been detected migrating Cape Cod, even though Tiger sharks are tropical species during the summer currents carry warm Gulf coast of Cape Cod to the north end of the range.

Tiger sharks can be seen in the Gulf of Mexico, North America and the coast of South America. It is well known in the Caribbean Sea. Other location where tiger sharks seemed to include Africa, People's Republic of China, Hong Kong, India, Australia and New Zealand.

Some tiger sharks have been recorded at depths just shy of 900 meters (3,000 feet), but some sources claim they move into shallow water is usually considered too shallow for the species size. A new survey shows the average tiger shark will go down to 350 meters (1,100 feet), so rare to see tiger sharks in shallow waters. However, tiger sharks in Hawaii have been observed at a depth of 10 ft and regular shallow coastal waters observed at a depth of 20 to 40 ft. They often visit shallow reefs, harbors and channels, creating the potential for encounter with humans.

Tiger shark known as Kiribati and Tuvalu Tababa on. They have been observed feeding on the intertidal flats of the lagoon and the sea in Tarawa, Kiribati. Spring tides bring plankton or animal self, which attracts small soft-shell crab, sardines interesting, attractive gray mullet, supported striking blue trevally (rereba), which then attract tiger sharks (Tababa).

One of the largest sharks living today, the tiger shark generally reach a length of 3 to 4.2 m (9.8 to 13.8 feet) and weighs around 385-635 kg (850 to 1.400 lb). Sometimes, very large tiger shark boy can grow up to 4.5 m (15 ft). Women are much larger, and very large reported can measure more than 5 m (16 ft). While the average smaller and, because shark sleek, slim build, usually less weight, the largest tiger shark great white to match the length. According to FishBase, tiger shark can grow up to 7.5 m (25 ft) long and 807.4 kg (1780 pounds) in weight. A Guinness World Records, one of the female specimens caught Australia reportedly measured 5.5 m (18 ft) long and weighing an incredible 1,524 kg (3360 pounds), although the estimated weight was decided by the pregnant at the time. A woman reported caught in 1957 measured 7.4 m (24 feet) and weighs 3,110 kg (6,900 lb), although this is very outsized unknown shark has been confirmed.

Great White Shark

Great white sharks are found mainly in sea macropredator being and ocean climate, but Great White Shark may also occasionally enter tropical waters. This is especially the epipelagic residents, which means that it can usually be found in the top layer of the sea, usually between the sea surface and thermocline at a depth of about 200 meters. The Great White Shark is known but sometimes traveling as far as 250 meters. It can be found in surfline or in waters far from the beach. The Great White Shark found from coastal islands where the water is deep and shallow beach located near one another, and reef fish can be found off the coast.

Great White Shark is actually not just white. Above, their color varies from almost black to gray while the ventral surface white or whitish. Pelvic fins can be seen with olive and gray. In strong sun light, can display a lateral surface of the colored almost shimmering bronze. The area surrounding the gill opening, and a base of fins often blotched. The same thing also happened with the small, black spots or irregular dark on posterior side of the fifth gill opening. Great White Sharks have each individual coloring and pattern, but there are also similarities district. For example, Great White Sharks off Cape Province in South Africa more generally shows shades of olive, while the Great White Shark off California in the United States has a gray coloration is very dark. Great White Sharks in the Mediterranean Sea are usually olive-brown or gray.

There is always a lot of speculation about the maximum size of the White Shark. Unconfirmed sources claimed that the Great White Shark she looks more than 7 meters outside Kangarro Island in Australia in 1987. In the same year, the female shark from Malta reported 713 centimeters. In October 1998, however, examined photos of this shark and shark turned out to be more than 530 centimeters. Many members believe that the Great White Shark maximum length is somewhere around 6 meters. The smallest adult Great White Sharks are found in the wild is about 120 centimeters. We still do not know for certain length at maturity for the Great White Shark, and it is possible that different people mature at different distances. But we know that Great White sharks are often adult females when they are between 450 and 500 centimeters, and that male Great White Shark often adults when they are around 350 centimeters. A study conducted at the Great White Shark 21 shows that they are mature when they were around 10-12 years, but this is only a single study in quite a few individuals and should not be used to make general assumptions.

The Great White Shark has a conical nozzle, the shape is quite blunt. Teeth large, triangular-shaped and rough sawn timber placed in patterns like. Their latin name, Carcharodon carcharias, actually means "jagged-toothed One '. The Great White Shark is equipped with five gill slits. Characteristics of first dorsal fin is almost an equilateral triangle, with the margin slightly concave back. At a very young individuals, the first dorsal fin rounded at the apex, and grew pointier first two years. Second dorsal fin is always very small in the Great White Shark. Caudal fin is crescent shaped, and the Great White Shark is bigger than 2.0 meters usually have a pointed tip acute. In the newborn sharks, the lower surface of the tail is generally more compact and rounded. This area but will be expanding very soon after birth and will look like the surface of the tail of the Great White Shark adult.

Great White Shark Carcharodon genus belonging to the famous and near relatives are four other mackerel shark family Lamnidae. Many historians agree that when Aristotle and other Greek writers write about "the monster Lamia scary" they are referring to animals that now we call the Great White Shark. Lamia Lamie name and is still used in the Mediterranean a few, like the Greeks and the language of southern France. During the 16th century naturalist Guillaume Rondelet suggest that perhaps the prophet Jonah in the Bible is not swallowed by a whale, but with the Great White Shark. Just like today, the Great White Shark feared and admired good and is surrounded by many rumors. Historically, the Great White Shark has been known by several different names. Always only be one of the recognized species of the white shark, but has been called Squalus carcharias, blood drinking carcharias, carcharias verus, Carcharodon rondeletii, Squalus carcharias and Carcharodon smithii. Today, the formal Latin name Carcharodon carcharias, which means a jagged-toothed.

Detailed knowledge of the Great White Shark breeding habits are rare, but at least increased rapidly over the last few years. Previously, most of the ideas and advice on Great White Shark reproduction is based on comparison with other related species of shark known to the scientific community. There is one report from 1937 about the arrest of pregnant sharks three years earlier, but was not sure whether this is the Great White Shark or some other species. It was not until 1980 that a more detailed study of pregnant white sharks occur. Verified reports talking about 5 to 10 embryos, but there are also unconfirmed reports that about 14 embryos. Female sharks do not develop the placenta, and embryos are not protected by the use of eggs without fertilization (oophagy). Embryos also swallow his own tooth warehouse; possible to re-use of calcium and other minerals, but is yet to be confirmed. Time of pregnancy is unknown, but estimated at around 12 months. Births may occur in temperate waters off the shelf from spring to late summer. A Great White Shark of a newborn is between 120 and 150 centimeters.

The kopulasi actually have not seen, but the curious behavior of the surface by the Great White Shark may be part of the mating ritual has been observed. Mating rituals for other species of sharks, often including biting and holding the tooth, and bite marks were found on the pectoral, pelvic, and dorsum of female White Shark that shows that this may be part of their mating ritual as well. Great White Shark large adults of both sexes and their offspring have been seen together in certain regions around the world, which probably means that this district nursing policy for the Great White Shark. Examples of these areas are the waters around Japan, South and East Australia, New Zeeland, Eastern Cape Province in South Africa, Southern California and Baha in the U.S. and South-Central Mediterranean Sea (especially between Tunisia and Western Sicily). Quite Great White Shark older, but still less than one year old, was arrested outside Algeria, North Aegean and Mediterranean France.

Bronze Whaler Shark

Bronze Whaler shark is a large species and can reach a maximum size of at least 325 cm and weighing up to 250 kg. Bronze Whaler shark has a blunt nose and the area of ​​medium length with sharp round or pointed. There are narrow, the shark tooth cusp determined. Bronze Whaler shark does not have a ridge interdorsal. The upper part of the body showed gray and olive bronze, while the belly is white. Fins plain, but the black tip of pelvic fin and the end of the rear edge of the pectoral fin and a dark or black. Just like other shark species, Bronze Whaler shark has a frame made of cartilage, not bone. Cartilage is a flexible material and is found in the human body also, for example at the end of the nose and on the outer ear. Cartilage is very flexible when formed but the body use calcium to be stiff and strong enough to support the body's large sharks in the water. Shark family is very old and has been around for more than 350 million years. Along with the shoes and rays, shark species is the only non-endangered fish with cartilage instead of bone.

Bronze Whaler sharks inhabit most parts of the world and is found in the waters around all the continents except for the cold waters around Antarctica. In the occupied West Atlantic and Gulf of Mexico water from Brazil and Argentina. Bronze Whaler shark also lives off the coast of southern France and around the coast of Africa. It is generally found in the Mediterranean. In the Western Pacific Bronze Whaler sharks are found from Japan to New Zealand, and the Eastern Pacific is inhabited areas of southern California in the United States and all the way down to Peru, including Gulf of California.

The Bronze Whaler sharks that inhabit the planet north of the distance traveled each year and migrate south for the winter and return north for the summer.

Bronze Whaler shark like tropical and subtropical waters, and found from 45 ° to 52 ° S. LU This is related to the reef and are known to dive to at least 100 meters. In shallow areas can be found near the bottom. This is a species off the coast that is often used to go over the edge of the continental area. The Bronze Whaler shark will also sometimes great effort to bay beaches and coastal areas. It is generally found in marine waters, but also seen in brackish areas.

It eats fish, especially pelagic and bottom bony, particularly swordfish and shark swordfish. It is also known to take other sharks, fish, mullet, stingrays and squid. The annual sardine run off the coast of South Africa always attract plenty of Bronze Whaler shark.

Bronze Whaler shark popular among fishermen and fish are often caught rawai. It is one of the slowest shark species grow, which makes it very vulnerable to over-fishing. The minimum population doubling time for Bronze Whaler shark more than 14 years. Bronze Whaler shark was involved in shark attacks on people and should always be approached with caution. The best way to prevent attacks is to stay away from sharks and never even try to approach even if it is relaxed.

Over the last few years Bronze Whaler shark has been the focus of the research project utilize satellite technology to monitor the migration patterns. This has produced amazing results and today's scientists suspect that there are at least two different populations of Bronze Whaler sharks off the coast of southern Africa. The first eastern Western Cape life, while other residents were found in Walvis Bay in Namibia and Angola to the north off. The Bronze Whaler shark found off Namibia and Angola's the same people and travel between countries. Two sharks tagged in southern Angola in 2003, located in Swakopmund in Namibia, three months later, which is 715 km south from southern Angola.

Bronze Whaler shark is the bearer of the internal life and Bronze Whaler shark woman will give birth to live puppies. This forms the pair of species and the eggs are fertilized in the female and the male hug. Bronze Whaler shark breeding methods are vivipar and offspring receive nutrients from the yolk-sac placenta while they develop in their mother's body. One of the litter will consist of between 7 and 20 cats and newborn calves Bronze Whaler sharks are usually 59-70 cm. Bronze Whaler shark gives birth year rotation, but with a peak during the summer.

Bull Shark

Bull Shark is  massive sharks that can reach 3.5 meters long and weighing more than 315 kg. The female usually larger than males. The body is compact with a short nose and wide which gives a rather dull appearance. Eyes are very small and without ridge interdorsal body. Characteristics of first dorsal fin is large and has a triangular shape. It is usually 3.2 times higher second dorsal fin. Sports bull shark on the gray color and white belly. Fins have dark tips are especially seen in young sharks. Bull shark teeth on the triangle and toothed. Banteng shark oldest was 32 years old.

Bull sharks, Carcharhinus leucas, known by the name, including the Shark River, Estuary Whaler, Freshwater Whaler, Swan River Whaler, Ground shark, Slipway Grey, Zambezi and Shovelnose. There are only six known species of sharks in the world could live in both salt and fresh water: Borneo river shark (sp Glyphis B.), the Irrawaddy river shark (Glyphis siamensis), New Guinea river shark (C. sp Glyphis), shark Ganga (Glyphis gangeticus), shark Speartooth (Glyphis glyphis) and Bull sharks (Carcharhinus leucas). Bull sharks are the most common of the six species and is found in various parts of the world.

In the West Atlantic, you can find Bull sharks off the coast of Massachusetts, United States and south to Brazil. In the East side of the Atlantic Bull shark off the coast live Morocco and from Senegal to Angola. Bull sharks are also found in the Indo-West Pacific region where it occupied the territory of Kenya and South Africa to India, and farther to the waters around Australia and Vietnam. At the West side of South America-North and Bull shark life from southern Baja California in Mexico and Ecuador. Bull shark may also have been seen off the coast of Peru, but this is still not confirmed.

Bull sharks prefer to live near the coast and live in shallow waters such as bays and estuaries. To be able to survive in fresh water it will often swim rivers and streams, and even in the lake. Bookmark and especially young sharks found fresh water and is sometimes found hundreds of kilometers from the sea in rivers and streams. Sharks, Bull sharks prefer adult district where freshwater rivers flow into the sea, such as river deltas and estuaries. Silver sharks rarely dive deeper than 30 m and are usually found in shallow waters where many only a few meters depth. This preference for shallow waters very close to the coastline and the bay silence means that Bull sharks must share their habitat with humans in much of the world. This is also why the Bull shark is considered one of the most dangerous shark species and has been involved in a series of attacks on humans. Bull sharks must always approach with caution, and preferably not exposed and bothered at all if possible. Reputation as devil man eating animals but really not qualified.

Bull shark hunt alone and feed primarily on bony fishes and other sharks. Sandbar sharks are very popular small, but the Bull sharks are opportunistic and will eat various foods, including rays, sea turtles, carcasses of mammals, mantis shrimp, squid, crab, sea urchin, sea snails and even garbage.

A Bull shark will reach sexual maturity when it is between 8 and 10 years. Bull shark reproduction method is vivipar. Fertilized eggs in females and developing Banteng shark in itself, receive nutrients from the yolk-sac placenta. After a pregnancy of around 10 or 11 months she gave birth to live puppies. During courtship, the male embracing the female and female sharks Banteng because it will always have scars on their bodies courtship. Male bull sharks are almost always without fighting scars. One litter usually consists of 1-13 small fish and young Bull shark is usually about 60 cm at birth. Delivery time depends on the habitat female Bull shark. For example,female Bull sharks live from Nicaragua can give birth year rotation, with the number of births peaked in spring and early summer. Bookmark and women who live sharks off the coast of South Africa on the other side will only give birth in late spring or early summer. The same is true for women Bull sharks living in the western North Atlantic off Florida or the Gulf of Mexico. The minimum population doubling time for Bull sharks more than 14 years.

Bull sharks are strong fish that can be successfully kept in captivity and is often found in public aquariums. It is also to be hunted by humans. Meat is eaten fresh, frozen or smoke, while the fins are popular in shark fin soup. Other parts of the Bull shark also used, such as skin turned into leather, liver oil and appreciated for remaining carcass commonly used to produce fish meal. It is also often caught in the fishing industry without a real target species. Bull shark is particularly vulnerable to human impacts because they want to stay near the ground and share the same habitat as we are. Average size Bull shark caught by the House of  Natal Sharks have fallen and there are some concerns about the status of the Bull shark, but only considered lower risk - near threatened by CITES, the Convention on International Trade in Endangered Species of Wild Fauna and Flora Malformed. Bull sharks, but are included in the IUCN Red List of Threatened Species. (IUCN today changed the name of "International Union for Conservation of Nature and Natural Resources" for "the World Conservation Union," but the acronym is used to IUCN red list.)

Blue Shark

Blue shark, Prionace glauca, easy to distinguish from other sharks in the blue staining. This family-owned Carcharhinidae, which means that it is the shark Requiem. When you watch the blue shark from above you will see a deep indigo blue color, while blue sharks observed from the addition appears bright blue. White belly and tip of pectoral and anal fins with black color. Body elongated and slender blue shark can usually reach the size of 3.8 meters (13 feet), but the longest blue shark ever found even greater than that measured 400 cm. Blue sharks are known heaviest weight was 205.9 kg. Very long pectoral fins Blue sharks are always equal in size to the length of gill current and nozzle tip shark. Snout long and has a conical shape. Lobe of caudal fin Blue shark is much larger than the lower, and the base of the tail has a weak keel. There is no ridge interdorsal. All blue sharks have large eyes covered by a membrane pengerjap.

Teeth on lower jaw and valve equipped with a small triangle or finely serrated edge. Serrated teeth for catching blue shark facilitate smooth animal, such as squid. Teeth are in rows, and new teeth into place smoothly play immediately after tooth long been tired, lost or damaged. Blue sharks will only use the first two rows of teeth when hunting, another line only to play into place when needed.

Blue sharks are one of the fastest swimming sharks, and can easily keep speed with most fish species. Body long, slender and fit to swim faster because the water is very small barriers. Large tail fins move side to side and provide more strength for blue shark. Swim by means of an elegant and powerful enough to make the jump from the water. Further research is needed to confirm the maximum speed of the Blue shark. Some scientists estimate the maximum speed to about 35 km / hour (22 miles per hour), while others claim that the maximum speed can be about 97 km / hour (60 miles an hour).

Blue sharks are found in most of the world, between 50 º and 50 º latitude LU S in offshore waters and coastal waters. This settled the Atlantic and Pacific Ocean and Indian Ocean and the waters of love is and tropical climates. It is believed to be chondrichthyian beruaya from the widest and far. A marked blue sharks off the coast of New Zealand and then found 1200 km off the coast of Chile. The Atlantic blue sharks follow the warm Gulf Stream, and emigrated across the Atlantic each year. Their journey starts in the Caribbean Sea and the results along the east coast and then to Europe. They then reverse direction and follow the line of the West African coast before they turn and swim back to the western Caribbean Sea.

In the western Atlantic blue sharks you can see 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 is included.) The Indo-West Pacific region spread from East Africa to Indonesia and Japan. It is often seen throughout Australia, New Zealand and New Caledonia. In the Eastern Pacific Blue sharks inhabit the vast territory between the Gulf of Alaska and Chile.

Blue sharks are primarily marine, but also commonly found in near coastal waters, especially in the continent are narrow ramps. Blue shark in temperate areas will always stay close to the surface in the pelagic. In the warm tropical waters of the deep dive deeper, because the preferred water temperature between 7 º and 16 º C, which are usually found further down. Depth range is known for blue shark is 0-350 meters, and generally found to 150 m. Blue shark will often form large schools. These schools are often composed of men only or women only, and all the blue shark is 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 feeds primarily on squid and bony fish. Pelagic fish usually form the basis of the Blue shark diet, such as sword fish, tuna, mackerel, cod, herring and sea raven. Seals, flatfish, pelagic red crabs and dead Cetacea is also part of a normal diet. Blue sharks often will attack the fish has been caught by long line or the same capture device, which unfortunately means that Blue sharks are often caught 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 the minimum population doubling time is more than 14 years. Method of reproduction is vivipar, which means that the eggs develop into the dog in the female blue shark and receive nutrition in her body. After mating the female Blue Shark can store sperm for several months, sometimes even years. Sperm covered in his oviducal gland where they will be provided with nutrients to stay alive. When finally he berovulasi, fertilization took place, and live Blue shark pup born after pregnancies of 9 to 12 months old. Blue sharks are one litter of puppies usually contain 25-50, but the stretcher area 135 have been reported. The bigger the blue shark women, children more dogs in each litter. Blue sharks are very small can have a litter with no more than 4 cats. Blue shark A newborn puppy is between 40 and 51 cm (16 and 20 inches) long. A blue shark adult female will not become sexually until it has grown to be at least 2.2 to 3.2 meters (7-11 feet), while the male blue sharks are usually due when it is between 1.8 and 2.8 meters (6 and 9 feet). Blue sharks maximum age exceeding 20 years.

Blue sharks always have to be handled with caution as there were reported attacks on humans. Blue sharks are hunted and sold as food. Meat is sold fresh or preserved, and the most popular fin soup. Hiding from the Sharks Blue was used for the skin. Blue sharks are classified as lower risk / near threatened extinct.