ancient shark

The flipper fossil reveals a large shark that ate the carcasses of baleen whales floating in the sea 15 million years ago.

Florida residents discovered a million-year-old fossil tooth of the largest shark ever existed on Earth.

The researchers were surprised to find traces of the giant fossil shark's head in the cave walls in Kentucky.

In a natural sink in the heart of Mexico's state capital of Yucatan, scientists have discovered traces of megalodons, beasts that are many times larger than ordinary sharks.

UPI news agency quoted Professor Lauren Sallan that the journey into the sea to reproduce and shark to return to freshwater environment is very rare.