Sharks and their types
Tiger shark (Galeocerdo Cuvier)
One of the largest, most widespread, characteristic colored and dangerous to human life shark species. Gray back and sides are covered with dark brown or dark gray spots merging in the oblique and transverse bands.
As they get older the fish, the spots begin to fade from head to tail. Bottom white. The head sharply rounded mouth wide. The tiger shark is omnivorous and illegible in the diet; the person said no way the worst dish than leather boots or sea turtle.
Attacks on humans have occurred throughout the entire range of the species. A feature of the predator is that he prefers to scour the shallow bays, getting even in the mouth of the river, that is, in the most attractive areas for bathers.
Although it can be found in the open ocean, and small islands. The tiger shark can attack and on the boat. Actually, it is the second after the Great white shark predator in the ranking of the most dangerous shark’s killer. Reliably documented 27 cases of tiger shark attacks on humans.
With this entire shark is quite slowing (enlivened only smelling food) and was hooked after the first sharp resistance surrender at discretion. Registered life expectancy – 50 years. World record according to IGFA: tiger shark – 807 kg.
Mako shark (Insures oxyrhincus)
Distributed in the tropics everywhere. Shark-fin mako repeatedly met off the coast, near the beach, where it attacked the swimmers people. Mako shark is often found in the open ocean, which is able to attack small boats. The most aggressive cannibals carry it with good reason. Usually mako eats fish (often quite large), cephalopods, and crustaceans.
The body is elongated, proportionate, big eyes. A distinctive feature of the shark-fin mako from other relatives is her teeth. They are all bent inward mouth, incisors act like a saw. The back is dark blue or dark gray, blue flanks and belly of an off-white shade.
As game fish highly regarded because it has excellent fighting qualities and high speed (it is considered the fastest of all sharks). Catching this fish is really exciting – the shark is thrown out of the water, making candles, subtly resists. World record according to IGFA: shark-fin mako – 553.5 kilograms.
Lemon shark (Negaprion brevirostris)
Lemon shark or negaprion, Panamanian negaprion, yellow shark. This shark has impressive size and great strength. Both dorsal fins from sharks that are the same size. Sharks big eyes and muzzle. The width of the jaws of lemon sharks longer than the muzzle. It is because of their color, these sharks are called lemon. The body of these predators is colored yellowish-brown, the belly, in turn, has a whitish-yellow.
Lemon sharks are not immersed to a depth of 90 meters. Usually inhabit the waters of the Gulf of Mexico and the Caribbean, as well as in the West Atlantic from southern Brazil to New Jersey. Most often, these sharks can be found in the Caribbean. It can be based on the bank without movement and make a low and high salt content in the water. They can even remain in fresh water, but not too long. There are cases where lemon sharks have resorted to migration.
This predator eats mainly fish. Small birds feed on small fish. The more it becomes predator, the more they choose an opponent. The main food mass up teleost fish (about 80%) and shellfish remains. Adults are able to attack the small sharks and seabirds. Lemon sharks, like many others, is viviparous. She has a yolk sac. Incubation lasts babies a year. Each female can give birth in my life about 10 sharks, because it can only give birth every other year because of the existing breeding them pause. Infant’s lemon sharks grow very slowly.
Increasing the length of the shark for the first year of life is only 10-15 centimeters. Females give birth only in the immediate vicinity of the land. The adult female reaches sexual maturity at about 12-15 years old. They are dangerous to humans. It is included in the list of sharks that attack and eat people. World record according to IGFA: lemon shark – 183.5 kg.
Great hammerhead shark (Sphyrnamokarran)
The biggest of all shark species. Outwardly, almost no different from the smooth hammerhead, only the size, shape of the head (it is more straight, not curved) and a way of life.
She inhabits, mostly in coastal areas, in the bays where the water is calm, and the bottom of the sand. Distributed in all tropical and subtropical waters. Inclined to seasonal migration.
Great hammerhead – solitary predator, but at a young age forms small flocks. Great hammerhead is an active predator. Its diet is varied; it includes invertebrates, such as crabs, lobsters, squid, octopus, and bony fish such as tarpon, sardines, sea catfish, fish, frogs, sea carp, grumblers, horse mackerel, croaker, sea bass, flounder, fish, sea urchins and small sharks.
The favorite prey is the stingrays. To wake up the ramp, she shakes her head over the bottom, thus attracting attention. Shark stun rays hit his head and eats from the fins or head. In one of the sharks caught in the Florida area, Perry Gilbert researcher found stingray spines spotted eagle ray in the mouth, head and fins.
Of course, the great hammerhead is able to cause fatal injuries to man. Divers report that the great hammerhead, usually timid or indifferent to people. However, there were reports that they swam close or attacked. World record according to IGFA: great hammerhead – 580.5 kg.
Thresher shark (Alopias spp.)
It occurs in all tropical waters, regardless of temperature. It can be found in the north-eastern Pacific Ocean, as well as in the western Atlantic Ocean. Shark-Thrasher – pelagic fish, the depth of love, but sometimes swims in coastal zones. Therefore, it does not attack the man, but there were cases of attacks on boats.
It differs from other sharks with her big eyes and a long upper tail fin. The skin is much softer than other sharks. Coloration varies from dark gray to dark brown. The abdomen, the lower part of the head and the lower tail fin – white. Teeth small and her eyes are her assistants in danger.
Thrasher is a solitary lifestyle, but rarely going in packs for hunting, often they attack prey in the pair. It feeds on small tuna, needlefish, blue fish, mackerel and fish-needle. He is very active opponent when playing. World record according to IGFA: shark Thrasher – 348 kg.
Bull shark (Carcharhinus leucas)
It belongs to the genus Carcharhinus or these gray sharks. Top in this massive shark gray, white bottom, wide muzzle, round nose, small eyes, fins with black ends. Rather widespread in tropical and subtropical waters around the world.
There are mainly in the coastal areas (besides, it is able to live a long time in fresh water, for example, swims for many kilometers in the Zambezi and even famous for its living form in Lake Nicaragua). Adults are often found in river deltas.
Omnivorous, along with fish, including sharks, crabs, squid, turtles, devour any scum. With all that this shark is very dangerous to humans, it is quite lazy and slow. Registered life expectancy – 32 years. World record according to IGFA: bull shark or bull shark – 222 kilograms.
White reef shark (Carcharhinus albimarginatus)
It belongs to the genus Carcharhinus or these gray sharks, although some attribute it to the taxonomy of the genus Triaenodon (hound shark). It is found in the open sea and the reefs at a depth of 1 800 meters, but usually no deeper than 20 meters. Dark gray or gray-brown on top and white underneath. The characteristic external sign – white rims on all fins. It feeds on benthic and pelagic fish, rays, cephalopods and young sharks. It is considered potentially dangerous. When you capture a large resistance has not.
Blacktip shark (Carcharhinuslimbatus)
Relatively small shark with oval eyes, yellowish-brown or bronze on the top and white underneath. All fins except one abdominal and one anal, with dark or black finish. It occurs throughout the world, usually around reefs in the waters around mangroves and even in fresh water, but not far from the ocean. It forms small flocks or singly floats. He prefers fish, but can feed on crustaceans, mollusks. It is known for its spiral jumps when playing. World record according to IGFA: Black Wing shark – 122.5 kilograms.
Grey reef shark (Carcharhinusamblyrhynchos)
Dark gray or bronze-gray top and white bottom. Lower anal fins black tail with conspicuous black border. The dorsal fin is usually light. It occurs on the continental and insular shelves, in shallow water and the open ocean at depths ranging from 0 to 1,000 meters (usually no deeper than 300 meters).
Day forms the cluster and is able to be active, although mostly nocturnal. It feeds on reef fish, octopus, squid, crabs, lobsters and stingrays. Can be aggressive in its pursuit of spear fishing enthusiasts. It belongs to the state rabies when devouring prey, and at this point can be extremely dangerous to humans. Registered life expectancy – 25 years. World record according to IGFA: gray shark – 33.5 kg.
Nurse shark (Ginglymostoma cirratum)
Solid yellow or gray-brown shark (in young animals – small dark spots on the body). Head blunt, mouth located on the bottom, in front of the eye. There are a couple conspicuous mustache between the nostrils. It occurs on the continental and insular shelf. Usually held near the coast, often at a depth of 3 meters. Often it is found in the ducts among the mangrove swamps.
It forms flocks of up to 40 pieces, which lay motionless in shallow water, near the beaches. The slow, low-activity sharks, harmless to humans, if they do not touch. Provoked unnecessary soliciting can cause serious injuries – cling bulldog in an arm or leg and did not let go, even when pulling out the land. It feeds the nurse usually at night, eating octopus, crabs, shrimp, sea urchins and small fish. Registered life expectancy – 25 years. World record according to IGFA: nurse shark – 330 kg.