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
Ask any shark biologist a question about sharks, and chances are, the answer might begin with, "We're not really sure, but…"
Whale sharks, the largest fish alive today, are capable of far deeper dives than previously suspected.
If sharks at the Pacific atoll of Palmyra used Google Maps, they'd see a lot of red between 7 p.m. and 8 p.m. every evening.
As shark attacks dominate Australian headlines, an annual survey reports that there were more shark attacks worldwide in 2015 than in any other year on record.
On May 20, tourists on an Australian cruise witnessed an incredible, albeit somewhat gruesome, sight.
Sharks are typically thought to lead mostly solitary lives, but new research finds that sand tiger sharks may be a lot more social than once suspected.
At least 10,000 sharks have gathered in waters off the southern coast of Florida — but don't panic. They’re annual visitors that migrate south for the winter.
Scientists have discovered a shark nursery off New York where baby sand tiger sharks migrate in order to eat and grow. See photos of the little sharks, ranging in age from several months to 5 years.
The ocean can be a deep and dark place, but the so-called "ninja" shark can light up its surroundings with a dimly glowing head, a new report says.
Color-changing cuttlefish have figured out how to turn down their emanating electric fields to hide from sharks and rays. They freeze in place and hold their breath, researchers have found.
A mega shark that lived 300 million years ago would have made today's great whites look like shrimps, according to fossils of the beast unearthed in Jacksboro, Texas.
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