Scientists off the coast of Belize were studying tiger sharks ... thought they were dealing with a six-gilled shark, and then with some hybrid of a polar shark with another species of Somniosidae.
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 ...
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 ...