The deep ocean is a vast reservoir of biodiversity that harbors unique species, communities, and ecosystems,” write the authors of a new study. We tend to think of the deep ocean as cold, dark, and ...

Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same mutation across fish species that have evolved on separate timelines — ...

The Japan Trench, a vast tectonic chasm along the Pacific Ring of Fire, is known for its extreme depth—stretching 5 miles below the ocean’s surface. Until now, this deep-sea environment has ...