Deep-sea fish thrive in extreme pressure, darkness, and pollution, revealing new survival mechanisms and threats.

Could lumpy metallic rocks in the deepest, darkest reaches of the ocean be making oxygen in the absence of sunlight?

A black seadevil anglerfish has captured − and broken − hearts across the globe after the small deep-sea creature swam to the surface in Spain's Canary Islands just before dying. A TikTok user ...