Pelican eels live in the mesopelagic zone (also known as the middle pelagic or twilight zone), at depths of around 9,000 feet (2,700 meters) along with other terrifying-looking deep-sea creatures ...

Deep in the twilight zone of the ocean, the fascinating strawberry squid floats around with two differently sized eyes.

Distinguished by its unusual morphology and a reproductive system based on "sexual parasitism," the anglerfish represents a ...

Hundreds to thousands of feet below the surface of the ocean, beyond where sunlight can reach, another world exists. It’s ...

The Pacific viperfish's sharp teeth are so long they protrude out of its mouth. These fascinating fish live deep below the ocean's surface.

which helps them differentiate between sunlight and the bioluminescent glow of other deep-sea creatures. The barreleyes live in the twilight zone, which receives just enough sunlight for creatures ...