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 ...

which usually bury themselves under the sand. The great hammerhead is the largest of the nine identified species of this shark. It can grow up to 20 feet in length and weigh up to 1,000 pounds ...

are thought to be even faster. Youngest shark to bite a human: A marine biologist, while probing the uterus of a pregnant sand tiger shark, was bitten by an unborn pup. The strongest shark bite ...

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 ...

Sand tiger sharks eat their siblings in the womb; a phenomenon known as embryonic cannibalism or embryophagy. When the first embryo in each uterus reaches a certain size it consumes all its siblings.