Sharks

The predatory fish, nicknamed 'Ironbound', is on his way north to Canada.

Florida is sometimes referred to as the "shark tooth capital of the world," and new research documents the now-extinct species that have been discovered there.

An animal autopsy of the deceased Greenland shark that washed ashore in England revealed that it had meningitis.

Scientists tagged six great white sharks near Mexico's Guadalupe Island to monitor their social interactions. It turns out sharks love to hang out with their buddies.

A new study has provided the first evidence that sharks are capable of catching some zzz and has revealed that they can do so without closing their eyes.

A new video posted by a French urban explorer has revealed a number of decomposing marine animals, including a mummified shark, inside an abandoned aquarium in Spain.

Scientists discovered a rare, newly hatched ghost shark in the waters south of New Zealand.

Scientists have no idea what the extinct megatoothed shark megalodon looked like, a new analysis finds.

The discovery of four shark fossils with bite marks shows that ancient sharks attacked or scavenged each other.

A great white shark attacks a seal near Cape Cod, and video captured the gory battle.

An ancient whale's flipper bone has bite marks on it, revealing that a shark tore into it about 15 million years ago.

Italian naval officers found a dead angular roughshark (also known as the pig fish) in the waters near Elba.

Researchers caught rare footage of a juvenile angel shark swimming off the UK coast, offering hope that the critically endangered species is still breeding.

A female smoothhound shark recently gave birth in an Italian aquarium without having mated with another shark, in what may be a first-of-its-kind "virgin birth."

NOAA researchers stumbled upon a gang of great white sharks scavenging a dead humpback whale calf off the coast of Boston. Now, they're sharing the footage.

An ancient sperm whale tooth has gouge marks on it that may have come from an megalodon attack.

Hundreds of sharks have taken refuge in a Florida canal to escape the toxic red tide, an algal bloom sweeping the Gulf Coast.

Acclaimed horror director Eli Roth has a new documentary on a horrific subject: the shark finning trade.

Ask any shark biologist a question about sharks, and chances are, the answer might begin with, "We're not really sure…"