In the waters around Southern Australia, extremely rare animals called handfish can very occasionally be spotted swimming ...

Fossils of Tiktaalik roseae blended fins with hints of limbs and sported a flat head suited for peering above the waterline.

Frogfish are some of the most colorful creatures under the sea — and some of the most unique, too. They look more like frogs ...

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

Invasive fish species is known for breathing on land, 'walking' to new water. It harms nature in Mississippi; kill it on ...

Imagine looking into a mirror and seeing a distant aquatic ancestor staring back at you. It sounds unbelievable, almost ...