Sharks have been evolving for more than 450 million years, developing skeletons not from bone, but from a tough, mineralized ...

Buried at Valencina de la Concepción-Castilleja de Guzmán, a site estimated to be about 5,300 years old, was an “exceptional” and rare sperm whale tooth, according to a peer-reviewed May 14 ...

All were lost to the fire. Luckily, three of the centre’s skeletons — a Risso’s dolphin, a Dall’s porpoise and a pygmy sperm whale — were all either on loan or being re-articulated ...

The first white shark of the season was spotted off of Nantucket ... They can grow between 10-14 feet and can weigh 850 to 1,400 pounds. Whale sharks are known as the largest fishes in the sea ...