Feared by most, loved by some and hunted by many, sharks are one of the most mysterious groups of creatures roaming the Earth today. Defined as a fish with a full cartilaginous skeleton and a sleek, streamlined body, a shark can range in size from the two foot pygmy shark, to the colossal 50-foot whale shark.There are more than 250 different species of sharks currently identified, making it one of the most diverse animal genera on the planet. Sharks are found in every major body of saltwater in the world, but are more common in warmer waters. There are a small number of shark species that do thrive in fresh water, and certain sharks have been known to venture from their saltwater homes to major freshwater lakes and rivers.Most members
With an underwater camera attached to his head, a diver captured a scary encounter with a great white shark off the coast of Florida.
A rare, deep-sea "goblin shark" caught by Florida shrimp fisherman is only the second of these creatures ever seen in Gulf of Mexico, scientists say.
A massive great white shark has been spotted swimming close to an Australian beach, scaring the locals and forcing the beach to close.
Sweet Pea, a shark ray, just gave birth to seven pups, making her the first shark ray in captivity to successfully give birth.
A quarter of the world's sharks and rays are at risk of extinction, according to a new assessment by the International Union for Conservation of Nature (IUCN).
Researchers tracked wild tiger sharks in the Coral Sea, off the coast of Australia, to study patterns in the animals' migrations.
Great white sharks may live much longer than previously thought, and also take longer to reach maturity, new research suggests.
A researcher snapped a close-up photo of a tiger shark with its massive mouth gaping open. The tiger sharks are often known as garbage disposals of the sea because of the variety of things they eat.
A live Greenland shark washed ashore on the island of Newfoundland this past weekend with a two-foot-long chunk of moose meat stuck in its mouth.
An ancient hunk of shark poop, dating to about 70 million years ago, contains evidence a newborn shark emerged from an estuarine pupping ground and devoured an unsuspecting newborn turtle.
Megalodon, the biggest shark that ever lived, seemed to get bigger over its evolutionary history. Its massive size may have made it more susceptible to extinction.
About 50 years after the first fossil teeth were found, scientists have finally described an extinct species of megamouth shark that prowled the oceans about 23 million years ago.
Using images captured during his career as a shark photographer, Thomas Peschak makes a stunning case that the predators are worthy of our respect and protection in his new book "Sharks and People."
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