Deep-sea fish thrive in extreme pressure, darkness, and pollution, revealing new survival mechanisms and threats.

It's a world full of organisms with unique adaptations to such a challenging environment. Welcome to the abyss. The viperfish (pictured above) is a fierce predator, with fangs so big that its mouth ...

The discovery of a golden scaleless fish in China is helping scientists understand how animals evolved to live in caves.

Adaptations of the teeth and jaws that allow the fish to adapt to a wide range of food sources and habitats are thought to be a factor in their success. Fish, including cichlids, have either ...

Scientists in China have discovered a rare golden scaleless cave fish, offering new insights into how species adapt to ...

The Northern sea robin, found along the western Atlantic, is notable for its wing-like pectoral fins and its ability to 'walk ...

Fish at the other end of Earth ... In each case, evolutionary adaptations allow them to exploit a food niche of ants and termites, but the developments occurred independently.

The infamous box jellyfish developed its frighteningly powerful venom to instantly stun or kill prey, like fish and shrimp, so their struggle to escape wouldn’t damage its delicate tentacles.