Deep-sea creatures such as oarfish, whales, and anglerfish are found in odd places. These nature's warning signs of calamity indicate tremendous environmental changes due to climate change and ...

A rare oarfish, often called the "doomsday fish," was spotted in Mexico—just days after another deep-sea creature, a deep-sea anglerfish, made a rare appearance in daylight.

The idea of monsters out there in international waters — and sometimes swimming right up to the shore — figures in so many cultures it would appear to be primal.