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Facts under Beastialtiy > Sharks

1 How long have sharks been around ?
Sharks existed before dinosaurs. They have been around for 4 million years.
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2 Shark bodies make up
Sharks skeleton's are different than fish skeleton's. Sharks are made up of cartilage which is a lot more flexible than bones that fish are made of.
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3 Shark attacks
The chances of being bitten by a shark are about 1000 times less than the chance of drowning.
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4 Largest Shark
Currently the largest shark is the Great White Shark. It can grow to be as long as 21 feet.
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5 Have sharks always swam ?
When sharks first existed they did not swim. They used to crawl and they lived on land. In time they moved to the water where they could move better.
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6 Shark's teeth
Over the course of it's life, a shark could use up to 20,000 teeth.
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7 What are shark's bodies covered in ?
A shark's body has no scales, instead it is covered in dermal denticles. Denticles are small plates that are covered by an enamel that is similar to teeth.
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8 Sharks used in research
Sharks are used in cancer research. It is very rare that sharks get cancer, therefore their cartilage is used in the research.
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9 Shark population
Today, about 3% of the fish population in the ocean are sharks. Thousands of years ago it was at 60%.
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10 Can sharks sink ?
Sharks must keep swimming or they will sink
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11 Shark noises
In New Zealand, there is a shark called the swell shark, it barks like a dog.
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12 Shark Jaws
Sharks have very powerful jaws. Both upper and lower jaws move. They are able to eat the bones of their prey.
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13 How do sharks have their babies ?
Some species of sharks will lay eggs, they are called oviparous. Other species of sharks will have a live birth, vivaparous.
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14 Shark species
There are around 368 different kinds of sharks and 30 families of sharks.
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15 Annual shark deaths
There are only 6 people in the world that are killed by sharks every year.
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16 Smallest Shark
The smallest shark is the Dwarf Lantern Shark and it only grows to be about 15 cm.
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