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 ...

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

It’s no wonder deep-sea creatures are so strange. They survive against the odds in one of the most extreme environments on the planet, featuring near-zero temperatures, desperately low oxygen levels, ...

An oarfish -- a super rare fish commonly referred to as the "doomsday fish" -- recently washed ashore on a beach in Mexico, leaving beachgoers stunned. The fish typically surface when they are dead, ...

A group of beachgoers encountered an interesting-looking fish as it surfaced in shallow waters on a beach in Mexico. The silvery, iridescent oarfish was captured on video washing onto the shores of ...

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 ...

For centuries, sailors told terrifying stories of glowing sea serpents rising from the depths — enormous silvery creatures ...

Looking out over the smooth, clear waters of Playa El Quemado this month, a wiggling object caught Robert Hayes’s attention as it headed toward the shoreline. Hayes had been walking the beach in the ...

Barreleye fish are named for their unique, barrel-shaped eyes. These eyes can rotate, allowing the fish to look both upward and straight ahead. Their eyes also have bright green lenses protected ...

Scientists discover underwater mountain ranges, golden towers of coral, and never-before-seen sea creatures.