الثلاثاء، 2 فبراير 2016

great white shark

DESCRIPTION:
The great white shark is a real sea monster. This is the animal that commits more attacks on humans and small boats. This phenomenal aggression earned him the nickname just as white death or man-eater. So it is a true inspiration of terror, especially since it is present in almost all seas, although it is much more prevalent in temperate climates than seas in the cold waters. His teeth are specially adapted to capture prey and tear their flesh significant pieces. Indeed, they are triangular in shape and measures approximately 7.5 cm. When the great white shark loses its precious teeth, it automatically pushes so that his jaw is never failing. But like any animal, however it has a fault, since he is forced to swim his whole life without stopping at a minimum speed of 3.5 km / h, so that his body does not lack of oxygen.
LIFESTYLE:
The behavior of the great white shark is highly variable depending on age, size and weight of individuals. Thus, scientists have noticed that young white sharks generally lived in the surface waters while having arrived at a certain age, they took refuge in the dark waters to depths never emerge. It is also thought that the great white changes sex, being male in his youth before becoming a female from a certain size. In the biggest subjects were captured effect for the largest share of females. On the other hand, the higher the animal's size is important and more likely it is to give birth has a good offspring, that is why researchers believe that sex change is the nature to ensure smooth white shark births.
FOOD:
 The great white shark is more than a predator, since any marine animal is a potential prey for him. Nothing scares him and especially nothing survives him, knowing that his favorite prey are larger. However, it consumes most time of tunas, marlins and swordfish, or even sea lions, seals and dolphins to mammals. The great white shark is likely rather solitary and it is rare that many people come together to hunt. However, when the blood of the prey into the sea, other white sharks may be attracted by the smell and join the meal, especially when we know that the great white can smell a drop of blood in the middle of 4.6 million liters of water. The daily food ration as the great white shark must swallow depends on many factors, including the temperature of the water. Indeed, the higher the water temperature, the higher the dietary needs of the great white shark increase. The great white shark feeds at the first opportunity, although meals can be spaced a month without its health is impaired. Prey detection is mainly using a supra-developed sense of smell. The nose of the great white shark is also its main nerve center which allows it to detect blood in the ocean. Some prey may possibly be identified through a system of echolocation also mastered by the great white shark.
COPYRIGHT: We only possess very little information on the reproduction of great white sharks. It is known however that the male reaches sexual maturity at around 10 years. Then think the sexual mores of the great white shark are also violent given the large number of these scars on the bodies of females and it is assumed left by suitors. The couplings are always held on the ocean floor and for that reason none have been observed. Just before this period females feed on two or three large prey, to accumulate fat because they must certainly continue fasting in marine depths and that throughout the period of reproduction. Moreover, we know that the great white shark is ovoviviparous, and its reproduction rate is quite low with only one extended from two to ten young every two years only.

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