Humans have driven sharks and their cousins to the brink of extinction. The health of the entire ocean is at stake.

Overall, then, the answer is no – for 95 percent of shark species, the idea that they’ll keel over if they ever stop moving ...

There are more than 500 recognized shark species living today. Sharks can be found in all of the world’s oceans, and even in some rivers. Their notorious and often undeserved reputations have caused ...

Tiger Shark. Image by Albert Kok, CC BY-SA 3.0 https ... where water flows into their mouths and over their gills as they move forward. Their 5-7 gill slits on each side extract oxygen with remarkable ...

Tiger sharks (Galeocerdo cuvier ... opening their enormous mouths and letting the ocean water flow through their gills, filtering out the plankton using gill rakers. The water is then removed ...

The tiger shark ended up tucking into Zimy's camera ... of what the inside of the shark's mouth is actually like - teeth, gills, and all. People have been left stunned after getting an inside ...

If a shark bites-and-runs South Carolina has its share of larger, more dangerous sharks like bull sharks and tiger sharks ... eyes and gills. If one tries to bite you, hitting or kicking these ...

The species was in a sharp decline due to overfishing, but protections put in place – such as prohibiting the harvest of any sand tiger ... shark(s) with a short, conical snout, and long gill ...

Sand tiger sharks swim around in their gallery at the ... conical snout, and long gill slits...(they are) dark grey or blackish on top, with the underside being white with dusky blotches." ...

Sharks have been around for about 450 million years. They’re older than dinosaurs and trees, and have survived multiple mass extinctions. Today, the planet’s oceans are home to around 500 shark ...