A small bone found 30 years ago at Dinosaur Cove in southeastern Australia could turn what we know about the evolution of echidnas and platypuses on its head.

Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same ...

A fish was spotted swimming under an eagle ray off the coast of Dunedin, Florida, on April 26. Drone footage from John ...

A longnose lancetfish washed ashore in a rare appearance in Seaside, Oregon. Seaside Aquarium staff examined the 5-foot-long ...

If you want to know whether a creature is a rodent or not, you can conclude pretty quickly by looking at a picture of the animal’s dental x-ray. Both the upper and lower jaw contain two incisors each, ...

Imagine plunging into the mysterious depths of the ocean, surrounded by shimmering scales, undulating fins, and creatures ...