Did you know there are more than 500 species of sharks out there in the world? These fascinating underwater creatures have been swimming in our seas for about 455 million years, and they can travel ...

A skull of Romundina, one of the earliest jawed fish, is shown in this image courtesy of Uppsala University in Sweden. REUTERS/Philippe Loubry, MNHN-CNRS-UPMC/Handout (Reuters) By Will Dunham ...

This is certainly not just another fish tale. A tiny jawless fish that lived more than half a billion years ago is providing scientists with a treasure trove of information about the very dawn of ...

New fossils illuminate the evolution of land vertebrates from fish Walter Gilberti 1 May 2006 A major fossil discovery at a site in northern Canada has provided compelling evidence of the evolutionary ...

A stunningly preserved, soft-bodied fish that is more than 500 million years old could be the ancestor of almost all living vertebrates. The fossilized fish, called Metaspriggina, sports ...

Fish out of water tend to flop around clumsily. But a Canadian scientist has found a way to raise fish to "walk" confidently with their heads held high — by forcing them out of the water at a young ...

A tiny desert fish survives in a sun-scorched cavern on the edge of extinction. Here’s how it’s offering scientists a rare ...

At the bottom of the world’s trenches, there’s a fish that shouldn’t exist. Here’s how it earned the title of the deepest-living fish on Earth.

WASHINGTON (Reuters) - Let's face it. It's easy to take for granted that mammals, birds, reptiles, amphibians and fish - vertebrates just like people - have a face. But it has not always been the case ...

WASHINGTON - Let's face it. It's easy to take for granted that mammals, birds, reptiles, amphibians and fish — vertebrates just like people — have a face. But it has not always been the case. The ...