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Sharks; pretty cool facts
Topic Started: Jan 22 2009, 03:41 PM (236 Views)
StrmySummer
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Storm Goddess

got these from discoverychannel.com


How are shark pups born?
If you think explaining reproduction to a child is difficult, try explaining it to a shark. There isn’t just one way for a shark to give birth. There are three: live birth, hatching from an egg or -- oddly enough -- an egg and live birth combination. Even stranger than that, in some shark species, pups have to survive gestation without being eaten by their developing siblings, and that’s no easy feat. It’s called intrauterine cannibalism, and it happens when embryos eat other fertilized or unfertilized eggs in the womb.

How do sharks see, smell and hear?
When you go swimming or scuba diving in the ocean, your senses are limited. You can't keep your eyes open underwater for a long time. The only thing you can smell might be the salt of the sea. And while you may be able to hear splashing or nearby boats, these sounds are likely muffled. Sharks, on the other hand, are at a clear advantage in the deep. They have advanced sensory systems that enable them to locate their prey, avoid their predators and find a mate. This is part of why they're so scary: Sharks can find us, but we can't find them.

How Sharks Work
Sharks aren't just hunters -- they're survivors. They sit atop the apex of the ocean’s food chain and are among the most fearsome creatures on Earth. However, they're also one of the most sophisticated and enduring species known to man, with fossils dating back 300 million years before the dinosaur age. Take a look at the anatomy, senses and daily life of the shark. And get up close to their scariest attributes, their teeth and jaws -- if you dare.

What is electroreception -- and how do sharks use it?
HowStuffWorks author Cristen Conger puts it succinctly: Sharks are literally wired for hunting. These finned predators of the high seas are equipped with a special sense called electroreception, an asset that allows them to hone in on prey with deadly accuracy. Yes, other members of the elasmobranch fish family, including rays and skates, share this trait, but sharks' electroreception abilities are the most finely tuned. Read more about how sensitivity to electrical currents helps sharks feed.


ok.....found this and just had to post it.....
http://www.youtube.com/watch?v=itvjYohS55w&feature=related
Edited by StrmySummer, Jan 22 2009, 03:57 PM.
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Isis
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I love watching shark week on the Discovery Channel, It show's alot of the stuff you posted here..... :reading:
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Isis, The Goddess of Desire & Darkness. In The Darkness, We Find The Light.

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StrmySummer
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yeah, i was watchin some of the videos on there, then got so into it from there, went to youtube and that's where i found the one i posted.......that to me was just scary as hell watchin that guy almost hang over the edge of the back of the boat while it was splashin wilding deeper into the water.....i kept expectin the guy to go overboard or get chomped or to have the shark come almost into the boat, it was funny though, never saw the shark.....but you saw the swordfish whole and alive jumpin out of the water a couple times, then all of a sudden, the guy's reelin in the head.......haha
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Isis
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The Goddess of Darkness & Desire

You know they are really having trouble with the shark's coming in so close in VA now, You use to never see them, but anymore they are all over the beach's?
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Welsh Shaun
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XNavyGunner
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Sharks are too cool! The scariest ones are the bull sharks. Aside from the ocean, they can live in fresh water too.
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Isis
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The Goddess of Darkness & Desire

That was a cute post WS... Your right Gunner it's the bull shark's that freak me out they can live in any type of water.... :swoon:
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Isis, The Goddess of Desire & Darkness. In The Darkness, We Find The Light.

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StrmySummer
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Storm Goddess

:lmao: i liked that one WS.....hmm.....maybe i'll look for some videos for bull sharks....hehe
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