Where Knowledge Rules

Sciences:

Biology

Get a Widget for this title

The evolution of sharks

as the tiger shark closes in on its prey.

How do they breede? While most fish produce large numbers of eggs that are fertilized by sperm ejected into the water, sharks breed by internal fertilization similar as mammals do.
Mating for the female can be painful since the male will often use his teeth to hold her still. One of the male's pelvic fins is introduced into the female's genital opening to act as a guide for the sperm during mating.

Their young may be from 10-80 in each brood. They are nourished inside their mother's body for nine months like humans. Unlike babies, they are completely independent at birth and have a full set of teeth. At once they swim away and begin to hunt for themselves immediately.

There is a mystical photo of a tiger shark in deep blue water with a diver next to it. It is sure an artistic photo but few divers would have the skills to survive. The Wildlife-Fact-File book states, "The tiger shark has been responsible for more fatal attacks on man than any other species of shark. Because it will eat anything, including man, it is one of the most feared sharks in tropical waters." Ladies and gentleman, this is a fact you cannot egnore if you enjoy going to beaches and swimming in the ocean.

Tiger sharks may attack people but not eat the remains. There are accounts of tiger sharks swallowing their human victims abound.

One report says that a tiger shark attacked two men and a woman on a life raft. It killed and swallowed one of the men. It then came back to snatch the woman. Their companion reached the safety of a nearby reef and escaped unharmed. Having a raft or a boat just doesn't protect people from shark attacts! Laying on a boat in the ocean is certainly peaceful but if sharks are around it is a myth. If a tiger shark is there be ready for a violent war which as a human you have no chance to win.

Some experts and divers insist that tiger sharks are really quite gentle despite such tales or data. Most people instinctively would say that one has to be insane to believe that. The common perception for most people is that a tiger shark means trouble and death.

"The tiger shark gets its name because of the dark stripes across its back. It is an efficient killer, armed with an extraordinary sense of smell and serrated teeth that can slice through flesh and bone. A proven man-eater, it is one of the most feared sharks in the world." So the Wildlife Fact-File concludes.

We as humans are drawn to the beauty and mystery of the oceans and their shore but we better be aware of its dangers so we can enjoy its beauty and stay alive. As the world becomes smaller and smaller people will want more and more adventures of exotic beaches but beware and before you book such a vacation. Your return trip may go to waste!

Learn more about this author, Anelisa.
Contact this writer Click here to send this author comments or questions.


Below are the top articles rated and ranked by Helium members on:

The evolution of sharks

  • 1 of 9

    by Briar Shaw

    In September 2003, Randall Miller, a paleontologist from the New Brunswick Museum, found the oldest intact shark fossil

    read more

  • 2 of 9

    by Kimberly Lester

    Beneath the chilly and murky waters of the deep, swims one of the planet's oldest living species of predators; the shark;

    read more

  • 3 of 9

    by Neil Dixon

    The very word 'shark' conjures up thought of the Great White that became famous from the series of films called Jaws. There

    read more

  • 4 of 9

    by Ian Loft

    Sharks are the great scavengers of our oceans and as a species predate dinosaurs where the oldest fossils are believed 400

    read more

  • by Anelisa

    "The tiger shark is a deadly predator. It is a solitary hunter that will eat anything it can get down its throat-including

    read more

View All Articles on:
The evolution of sharks

Add your voice

Know something about The evolution of sharks?
We want to hear your view. Write_penWrite now!

Helium Debate

Cast your vote!

Should men be allowed to be pregnant and conceive babies?

Click for your side.

124396

Featured Partner

E Square

E Square has partnered with Helium, giving you the chance to write for a cause. Browse E Square's featured title...more

What is Helium? | Buy Web Content | Contact Us | Privacy | User agreement | DMCA | User Tools | Help | Community | Helium’s Official Blog | Link to Helium

Helium, Inc.
200 Brickstone Square Andover, MA 01810 USA