Deep Sea Fish: Bizarre Creatures of the Abyss

Below 200 meters, sunlight vanishes and pressure becomes crushing. Anglerfish use bioluminescent lures in total darkness. Oarfish likely inspired sea serpent myths.

Coelacanths were thought extinct for 66 million years. Many deep-sea fish are bioluminescent, producing their own light. Most are small — food is scarce in the deep.

Pressure at 4,000 meters would crush a human instantly..