Tuesday, January 29, 2013

Great White Shark The Amazing Water Predator


The Great White Shark is macropredator found especially in temperate seas and oceans, but the Great White Shark may also be occasional tropical waters. This is especially an inmate epipelagic, meaning that it can usually be found in the upper layer of the ocean, usually between the sea surface and the thermocline at a depth of about 200 meters. The Great White Shark is known However bold sometimes well below 250 meters. It can be found in the waters serfline and very far from the beach. The Great White Shark is available from offshore islands where the water is deep and shallow beach located close to each other, and offshore reef fish can be found.

Great White Shark is actually not just white. Above, their color varies from almost black to gray while the ventral surface is white or whitish. Hip fins can be seen with olive and gray. In strong sunlight, lateral surface can display almost bronze colored sheen. The area surrounding the gill-slit and on the basis of fins often blotched. The same thing happened with the small, dark spots or dark irregular on the sides of the posterior to the fifth gill slit. Every Great White Shark has a individual coloring and patterns, but there are also similarities district. For example, the Great White Shark off Cape Province in South Africa generally show more olive tones, while the Great White Sharks off California in the U.S. has coloring very dark gray. Great White sharks in the Mediterranean Sea are usually olive-brown or gray.

There's always a lot of speculation about the maximum size of the Great White Shark. Unconfirmed sources claim that large female White Shark over 7 meters look out Kangarro Island in Australia in 1987. In the same year, shark female from Malta reported as 713 centimeters. In October 1998, a picture of this yet examined sharks and shark turned out to be more than 530 centimeters. Most experts believe that the maximum length of the Great White Shark is somewhere around 6 meters. The smallest adult Great White Sharks found in the wild is around 120 centimeters. We still do not know for certain length at maturity for the Great White Shark, and it is possible that different populations reach maturity at different lengths. But we know that the female Great White Shark often mature when they are between 450 and 500 centimeters, and that male Great White Shark often mature when they are around 350 centimeters. A study on the Great White Shark 21 show that they mature when they are around 10-12 years, but this is just an individual study on quite a few individuals and can not be used to make general assumptions.

The Great White Shark has a conical nozzle, with a somewhat blunt. Large teeth, shaped like a triangle and rough-sawn placed in patterns like. Their Latin name, Carcharodon carcharias, actually means "jagged-toothed One '. The Great White Shark is equipped with five large gill opening. The first dorsal fin is almost an equilateral triangle, with somewhat concave rear margin. In very young individuals, the first dorsal fin rounded at the apex, and grew pointier during the first two years. The second dorsal fin is always very small at the Great White Shark. Crescent-shaped tail fin, and the Great White Shark is greater than 2.0 meters usually have acute end point. In the newborn sharks, the lower surface of the tail is generally more compressed and round. This area but will grow rapidly after birth and will look like the surface of the tail of a large adult White Shark.

The Great White Shark Carcharodon genus belonging and close relative called four other mackerel sharks in the family Lamnidae. Most historians agree that when Aristotle and other Greek writers write about "the Lamia scary monster" they refer to the animals we now call the Great White Shark. Lamia and Lamie name is still used in some Mediterranean language, such as Greek 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 the whale, but the Great White Shark. Just like today, the Great White Shark is well feared and admired, and surrounded by a lot of rumors. Historically, the Great White Shark has been known by several different names. There is always only one who recognized white shark species, but has been mentioned Squalus carcharias, Lamia carcharias, Verus carcharias, Carcharodon rondeletii, and Squalus carcharias Carcharodon smithii. Currently, formal latin name Carcharodon carcharias, which means A jagged-toothed.

Detailed knowledge about the reproductive habits of the Great White Shark rare, but at least increased rapidly over the last few years. Previously, most of the ideas and know about Great White Shark breeding is based on a comparison with other related species of shark that is known to the scientific community. There is a report from 1937 on the arrest of pregnant shark three years earlier, but was not sure if this is the Great White Shark or some other species. It was not until the 1980's that a more detailed study of the Great White Shark pregnancy occurs. Confirmed reports speak about 5 to 10 embryos, but there are also unconfirmed reports that around 14 embryos. Yu girls develop placenta is not available, and even embryos preserved by unfertilised egg consumption (oophagy). Embryos also swallow their own teeth warehouse, presumably to return to the calcium and other minerals, but is yet to be confirmed. Time of pregnancy is unknown, but is estimated at around 12 months. Birth may occur in temperate shelf waters from spring to late summer. A Great White Shark newborn is between 120 and 150 centimeters.

The actual coitus not witnessed, but the surface of the curious behavior performed by Great White Shark that may be part of the mating ritual has been observed. Mating rituals of other species of sharks often include biting and gripping with the teeth, and the bite mark was found on the pectoral fins, hips, and dorsum of the female Great White Shark which shows that this may be part of their mating ritual as well. Large adult Great White Sharks of both sexes and their offspring have been seen together in certain areas around the world, which may mean that the district nursing policy for the Great White Shark. Examples of such areas are the waters around Japan, South and East Australia, New Zeeland, South Africa's Eastern Cape Province, Southern California and Baha in the U.S. and South-Central Mediterranean Sea (especially between Tunisia and Western Sicily). Great White Shark was a little older, but still less than a year old, was arrested outside Algeria, North Aegean and France in the Mediterranean.

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