A new species of mollusc has been discovered at the bottom of a river in Thailand after extreme drought. The creature, a large mussel — only the third known species in its genus — is considered ...

In its temporary home at a laboratory aquarium in China, a river creature began to “dance.” The small animal twisted its shell in circles, sometimes changing direction. Scientists watched the animal.

Around the deep-sea vents off the southern coast of Japan, a small, “glass”-like creature was discovered. Getty Images/iStockphoto Off the coast of Japan, thousands of feet below the surface, the ...