Facts About Sharks

There are more than a few hundred genus of sharks, varying in dimension from less than 10 inches to over 50 feet. These astonishing creatures have a ferocious repute, but enthralling biology. Humans are a bigger intimidation to sharks than sharks are to us. Several shark species are endangered by fishing or by catch, leading to the fatality of millions of sharks every year.
| Tuesday, April 20, 2010
Aqua life is quite fascinating based on the dimensions, shapes and colors of the wide-ranging genus of fish. Among most of them, one of the most feared is the complete variety of shark species. They are dreaded due to their aggressive nature. They do not like humans invading into their province.

The term shark originated from the Mayan term 'xook.' The shark callers in Papua New Guinea were the first who made people conscious of the association of human beings and sharks. In that era sharks were not really fierce, such that they were known as sea dogs.
 
Sharks have over flowed bodies. In this over flowed bodies, it has completely cartilaginous carcass. Sharks have 5 to 7 gills for breathing. Their skin has an external shield known as dermal denticles. This enhances the liquid dynamics of the shark.

Sharks are found in diverse range of dimensions and also shapes. They begin from to huge full-size white sharks to dwarf lantern sharks.  Sharks are few of the most enthralling as well as most misconstrued creatures on Earth. Nevertheless, impulsive verdicts have led to some misconceptions about these interesting sea creatures.

Shark Teeth Facts

Shark teeth facts are rather fascinating .It is said that sharks can have up to 3,000 teeth at one time. Majority of the sharks do not chomp their food, but swallow it down completely in huge pieces. The teeth are set in rows; when one tooth is spoiled or broken, it is restored by another. Majority of the sharks have approximately 5 rows of teeth at any time. The frontward set is the biggest and performs most of the activities.

Shark Sense of Smell

One of the prime causes behind sharks being such effectual marauders is their intensely accustomed senses. At first, scientists considered sharks as enormous swimming noses. When researchers bunged the nasal holes in enslaved sharks, the sharks had difficulty finding their prey. This appeared to reveal that the shark's other senses weren't as build up as its sense of smell. Further studies revealed that sharks in fact have multiple responsive senses, but that they rely on all of them functioning collectively. When you subtract one away, it considerably deters the shark's hunting skills. The shark's sense of smell and its nose is certainly one of its most imposing (and outstanding) traits. As the shark is in motion, water flows through two onward facing nostrils, placed beside the sides of the nose. The water penetrates the nasal tract and flows past folds of skin enclosed with sensory cells. In few sharks, these responsive cells can perceive even the slightest hints of blood in the water.

Shark Species

There are more than 400 shark species in the world. The biggest shark and the largest fish in the marine world is the whale shark (Rhincodon typus), which is said to extend to a highest length of 59 feet. The most diminutive shark is believed to be the petite lantern shark (Etmopterus perryi) which is approximately 6-8 inches long.

Tiger Shark Facts

Tiger sharks are known to be one of the top three sharks drawn in the gratuitous lethal assaults all over the world. The tiger shark is known to be the foremost assault genus in Hawaii. This bulky, treacherous shark is to steamy waters what the great white is to moderate waters. It is called Tiger Shark due to its murky stripes on their gray backs, which is distinct in young ones but becomes light or vanishes in grown up adults. Its broad mouth, wide nose, drum chest, and the thinness at the bottom of its tail are distinguishing. So, too, are their greatly saw-like, cockscomb-formed teeth structures. These, joint with its jaw force, permit it to slash the bodies of huge sea turtles, besides sea lions, seals, and cetaceans.

They are known to be energetic nocturnally, and go into shallow reefs and lagoons after twilight to feed. In few regions they voyage between island clusters to cash in on colonies of little birds learning to flutter over water. Usually, tiger sharks are lethargic, but they can move rapidly while feeding, and should be treated cautiously on the uncommon times they are spotted. If you come across one while plunging, coolly leave the water, keeping it in vision at all times.

Finally, one more appealing fact about sharks is that majority of them give birth to young ones just like human beings. Few species lay eggs. However most of the sharks reproduce baby sharks. Mother sharks can have 6 to 12 babies at one time while the tiger shark can reproduce as many as 40 sharks in one pregnancy.

   
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