Deep in the ocean, a giant fish does something no one expects—it produces milk to feed its young. This behavior is almost unheard of in fish, blurring the line between species and survival strategies.

This bizarre-looking fish may seem otherworldly, but every part of its design solves a real problem: how to see, hunt and ...

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 ...

Oarfish can grow longer than 20 feet and normally live in a deep part of the ocean called the mesopelagic zone, where light cannot reach. A rarely seen deep sea fish resembling a serpent was found ...

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 ...

Light behaves differently underwater. It shifts with depth, bends through murky currents, and separates into distinct ...

A new study offers the first direct evidence that deep-dwelling mesopelagic fish, which account for up to 94% of global fish biomass, excrete carbonate minerals at rates comparable to shallow-water ...

For several years now, one question has held the key to understanding just how much we should worry about the hundreds of tons of DDT that had been dumped off the coast of Los Angeles: How, exactly, ...

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 ...

An "odd-looking" deep-sea fish recently washed ashore on an Oregon beach to the surprise of a local aquarium. The Seaside Aquarium in Seaside, Oregon, published pictures of the dead fish in an April ...

An "unusually fascinating" fish that is known to emit a bioluminescent glow thousands of feet beneath the ocean's surface has appeared on the Oregon coast. A local aquarium that posted about the fish ...