Only 21 species worldwide are known to do this, almost all in northern climates, according to an article in the journal ...

A stunning discovery of a previously unseen sea creature has been revealed by scientists on the National Geographic and Rolex Perpetual Planet Ocean Expedition. For the first time, researchers have ...

These gorgeous, long-tailed marine creatures—formerly known as Siamese fighting fish—have been famous for centuries for their aggressive nature, which breeders have exploited in order to fight them, ...