Sand tiger sharks, also known as gray nurse sharks ... Sand tigers are the only shark known to come to the surface and gulp air. They store the air in their stomachs, which allows them to float ...

Ever wonder why sharks have so many differently shaped teeth or why they keep regrowing throughout their lives? Dr. David ...

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 ...

Their skin is covered with denticles, tooth-like scales that differ from ... while probing the uterus of a pregnant sand tiger shark, was bitten by an unborn pup. The strongest shark bite: The ...