These Sharks Glow Underwater—Thanks To Tiny Lightsabers loading...
These Sharks Glow Underwater—Thanks To Tiny Lightsabers
A new study finds a brand-new chemical pathway for biofluorescence in sharks—and the molecules are also antibacterial.
TIL: Some Sharks Can Glow In The Dark TIL: Some Sharks Can Glow In The Dark loading...
Veggie-eating shark surprises scientists loading...
Veggie-eating shark surprises scientists
It turns out they can also fast for months on end. But why?
New find could help save Galapagos hammerhead sharks loading...
New find could help save Galapagos hammerhead sharks
The sharks give birth in secluded bays that scientists worry may be exposed to fishing.
About Sharks

There are more than 450 species of sharks today including the great white, hammerhead and tiger shark. Species range in size from as small as 17 centimetres to 12 metres long. Sharks are usually found in oceans as deep as 2,000 meters.

Many sharks, are apex predators meaning they are at the top of the food chain in their environments. While some sharks are omnivores, most are carnivores and display an array of different feeding techniques.

Unlike other fish, sharks reproduce a small amount of well developed young. Most sharks live to be about 20 or 30. The largest shark, the whale shark, may live to be over 100 years old.

Despite what people believe, shark attacks on humans are unlikely. Out of the 450 species only four have been known to attack and kill people. In fact, sharks are threatened by humans due to habitat loss, coastal degradation and fishing. It is estimated that over 100 million sharks are killed each year.  

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