Researchers may have discovered Mississippi's largest ever mosasaur after pulling a Cretaceous-aged fossil out of a riverbed ...

Train them to swim through hoops or follow your finger — they love the challenge. They recognize faces, learn tricks, and ...

Researchers discovered tiny features on sculpins' fins which may enable them to cling firmly in harsh underwater environments.

Char can get big, but more impressive is their rich coloring. From giant Arctic Char to small native brookies, they resemble living paintings.

At the heart of the Amazon researchers are investigating a mysterious parasite which is devastating fish farms around the world.