When animals nod off, they're most vulnerable to sneaky predators. But despite the risks, the need for sleep is so strong ...

Cheetahs rule land, but the real speed kings soar and swim. From diving falcons to ocean racers, discover the animals that outrun expectations and redefine what fastest truly means today.

Deep-sea mining trials revealed significant but localized biodiversity loss in one of the planet’s least explored ecosystems.

Mosasaurs, giant marine reptiles that existed more than 66 million years ago, lived not only in the sea but also in rivers. This is shown by new research based on analyses of a mosasaur tooth found in ...

Giant mosasaurs, once thought to be strictly ocean-dwelling predators, may have spent their final chapter prowling freshwater ...

Finding that vampire bats along Peru’s coast carried H5N1 antibodies raises concerns that multiple bat species could become ...

Alabama researchers will track sound changes as the 990-foot vessel transforms into an artificial reef off Florida's coast ...

If someone told you it rained fish once upon a time, would you believe them? You'd be forgiven if you said "no." But get this ...

Read on as we reveal 30 fascinating facts about creatures great and small... Young pygmy goats (pictured above) are social ...

A surprising fossil find shows that some mosasaurs lived in ancient rivers as oceans changed near the end of the Cretaceous.

Michelle Spear does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Orcas are some of the ocean's most enigmatic and playful creatures, and they're not as elusive as you might think. Here's ...