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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This shark can change color — thanks to hidden nano mirrors in its skin

A Shark’s Sounds Are Recorded for What Is Believed to Be the First Time

Is that shark ticking? In a first, a shark is recorded making noise

Watch a fish hunt by hiding behind a shark

One Photographer’s Quest to Redefine the Shark

Megalodon: Scientists Reveal a Crucial Surprise About The Mega-Shark

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