Sand tiger sharks, also known as gray nurse sharks, have a deceivingly ferocious look. They are large-bodied and display a mouthful of sharp teeth that protrude in all directions, even when the ...

Like human teeth, shark chompers contain collagen ... When the researchers zeroed in on one species—the sand tiger shark—they found that it has moved up the food chain over time to become ...

Shark sex is a bitey business, with males grasping females with their teeth during the act. The resulting wounds are helping scientists to figure out when and where sharks are doing the deed.

Shutterstock Despite their fearsome teeth, sand tiger sharks usually attack humans only in self-defence This is the first time sharks, rays and chimeras (fish with cartilage in place of bones ...

OARAI, Ibaraki Prefecture--A sand tiger shark was born at the Aqua World Ibaraki Prefectural Oarai Aquarium here, the first successful breeding of the species in Japan. Only four other aquariums ...

Squalicorax had a body similar to modern gray sharks, Fossilera reports, but with the "can-opener" shaped teeth of tiger sharks. The species met its demise during the Cretaceous-Tertiary ...

Sand tiger sharks, also known as grey nurse sharks ... 70s they were hunted because they look really fierce with all their teeth and people assumed they would be responsible for shark attacks ...