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 ...

A deep-sea predator equipped with tubular, light-amplifying eyes and a highly specialized jaw system is capturing scientists' attention for its extraordinary ability to thrive in pitch-black waters.

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 ...