In the ocean's twilight zone, where the reach of the Sun fades to nothing, an epic migration begins every time night falls.

Down in the twilight zone, this fish’s head is see-through for a reason ...

These three fish are freaks, phantoms and mysteries of the deep. Here’s what we’ve learned from the rare glimpses we’ve had of their lives. The deep sea is one of Earth’s final frontiers. Given its ...

Far below the sunlit surface of the Pacific Ocean lives a fish that seems to challenge ordinary ideas about anatomy. Known as ...

The stargazer fish, known for its creepy face and deadly ambush tactics, has electric organs capable of delivering up to 50 volts, venomous spines and bulging eyes that appear to migrate across its ...

Mesopelagic fish, long overlooked in ocean chemistry, are now proven to excrete carbonate minerals much like their shallow-water counterparts—despite living in dark, high-pressure depths. Using the ...

Deep-sea fish, a group of inhabitants of the most light-deprived and harsh environments on our planet, have been discovered to possess a vision similar to humans. This groundbreaking finding not only ...

The deep sea, covering approximately 65% of Earth's surface, has long been considered a biological desert. In this extreme environment—particularly in the hadal zone at depths greater than 6,000 ...

A team of science-minded kayakers and snorkelers in La Jolla Cove had the encounter of a lifetime when a dead oarfish washed to the ocean surface on Aug. 10, 2024. This deep-sea fish is incredibly ...