Top Ten facts about Sharks

There are numerous animals which the human beings are really afraid of. But, there are only a few such animals that are as much threatening as the sharks to the human beings. But there are many facts, about these deadly predators, that are unknown to most of the people. Here are 10 best facts related to the sharks:

Came Earlier than the Dinosaurs

The sharks came into existence about 420 million years ago. They predate the dinosaurs by almost 200 million years. Still we are lucky enough to have them accustomed on the same planet.

No Bones in the Body

There is not even a single bone in the body structure of this prehistoric predator. The whole skeleton is made of cartilages. Sharks are the biggest cartilaginous fishes in this world. This makes them utterly unique when talking of body structure.

Immense Variety and Adaptability

Sharks are scientifically divided and diversified into over 500 different species or types. As a result, there are some species that cannot live out of the salt water, some others can live in a mixed environment of saltwater and freshwater system, and some other species can live comfortably in a completely freshwater system.

Rows of Teeth

Teeth of the sharks do not have any root. They have multiple (5 to 15) rows of teeth in each jaw as replacement or substitution measurement. When a tooth falls out, a replacement tooth comes in its place within one day.

Amazing Power of Sense

Research has revealed that sharks are color-blind. They are more attracted to yellow color. But they have a potentially strong alternative for this problem. Sharks use their lateral line system in order to detect any subtle movement in the sea-water. But the amazing thing is that Great White sharks can detect even a single blood-drop diluted in a 100-litre water from a distance of 5 KM.

Ranging from Miniature size to Massive

There are Dwarf Lantern Sharks who are only seven inches long. And then there are the Whale Sharks who can be measured up to 50 feet in length. The miraculous power of nature has it all.

Long Life

Sharks belonging to the species of smaller size usually live for at least 20-30 years. But, larger sharks can live up to as much as 100 to 150 years. This statistic points to a century of total underwater domination.

Variety in Giving Birth

There is no fixed way which the sharks follow to give birth to their babies. Some species lay eggs, and some other species give live birth. The structure of the reproductive organ varies from one species to the other.

Strong Survival Instinct

In the case of the Tiger Sharks, when the first pup (baby shark) hatches out inside the womb of the mother shark, the pup destroys and kills all of his unborn siblings. The womb is divided into two sides. So, this process goes on until only two pups remain on each side. This establishes the survival of the fittest.

Sharks are not threatening us, we are posing threat to them

Human beings are afraid of the sharks. But the fact is that the chance of a person getting killed by a shark is 1 in almost 4 Million. There are more chances for a person to get hit by lightning or fall victim to deadly bee-stings. On the contrary, over 100 million sharks get killed by the human beings for business, luxury, or any other petty purpose. Therefore, this situation needs to be handled more carefully to prevent these deadly sea predators from being extinct.

 

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