While the non-avian dinosaurs are long gone, sharks are still going strong. They’ve been around longer than trees (which first appeared about 400 million years ago), longer than the rings of Saturn ...

They say that the length of Megalodon has been estimated at approximately 50 feet—dwarfing modern great white sharks that grow to a maximum length of about 15 feet. While they were gone from the sea 3 ...

A shark expert, whose own curiosity about these fascinating fish was sparked by the movie "Jaws," explains some of their ...

Meet the 'sea moth,' a three-eyed sea creature from 500 million years ago The Mosura fentoni, or "sea moth," may have used its third, median eye to detect light and move around its environment.

An artistic rendering of a plesiosaur, an ancient marine predator that lived over 150 million years ago. (The Perot Museum of Nature and S) Although plesiosaurs evolved from land-dwelling animals ...