Shark

Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head.

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Overfishing has halved shark and ray populations since 1970

A shark survived being stabbed through the head by a swordfish

To make fluid flow in one direction down a pipe, it helps to be a shark

To make fluid flow in one direction down a pipe, it helps to be a shark - EurekAlert

This Shark Lives 400 Years. Its DNA May Explain Why.

Deep-water murder mystery leads scientists to a novel type of shark-on-shark predation

Scientists piece together clues in a shark ‘murder mystery’

Fossil Evidence Unveils Ancient Food Chain Drama: Sea Cow vs. Crocodile and Shark

Unluckiest sea cow fossil was eaten by both a crocodile and a shark

20 Million Years Ago This Sea Cow Was Eaten by a Crocodile, And a Shark

This Ancient Sea Cow Was Killed by a Croc and Eaten by a Shark

Love the Ocean? Thank a Shark

This shark lives for centuries. Scientists discover how it resists aging.

Researchers record images and data of a shark experiencing a boat strike

Researchers record first-ever images and data of a shark experiencing a boat strike - EurekAlert

Camera captures first-ever video of shark struck by boat

Shark-bitten orcas in the Northeastern Pacific could be a new population of killer whale

Researcher Accidentally Discovers Shark’s Amazing Power To Regenerate Its Sabotaged Fin

A shark regenerated an entire hole in its fin in under a year and scientists got the amazing transformation on camera