In a river of northeastern Brazil, an “armored” creature with “large” eyes paused to rest against a rock. The maze-like ...

Observing animal behavior in a laboratory offers a controlled environment, but these model organisms can behave differently ...

A scary-looking creature with “devil” in its name was spotted close to the surface off Tenerife, a Spanish island.

Scientists have discovered a brand-new species of deep sea-dwelling fish, sporting a unique facial feature that led the team to name it after a character from the animated film Princess Mononoke, a ...

Deep below the surface of a river in northern Brazil, a “shy” creature tucked its “armored” body into a rocky crevice. Divers ...

Turns out, there's more to the shark than sharp teeth and gills. Read on to learn about these misread sea dwellers.

Armored catfish are driving manatees out of their warm-water refuges, putting their health at risk. Here’s why it’s happening ...

A solitary sunfish at an aquarium in southwestern Japan lost its appetite, began banging into the side of the fish tank and appeared unwell days after the facility closed last month for renovations.

(Kaikyokan via AP) TOKYO (AP) — A solitary sunfish at an aquarium in southwestern Japan lost its appetite, began banging into the side of the fish tank and appeared unwell days after the facility ...

The fish became unwell when the Kaikyokan aquarium where it lives in Shimonoseki, southern Japan, was temporarily closed for renovations in December. It refused to tuck into its usual jellyfish ...