Off the coast of Papua New Guinea, a "dwarf"-like sea creature with spotted eyes swam around a reef. It darted into a nearby ...

The creatures can therefore "shape-shift" to perfectly fit their environment, according to the study. The shells are "bluish ...

Earth's vast oceanic biodiversity remains largely unexplored, with only a fraction of an estimated two million total living ...

NEW YORK (AP) — An underwater voyage has revealed a network of creatures thriving at the bottom of deep-sea ocean trenches. In these extreme environments, the crushing pressure, scant food and lack of ...

Photos taken by blackwater divers offered a new glimpse into the early life stages of marine fishes and their interactions ...

Marine animals living in the cold, dark depths of the ocean are interconnected across the world by a hidden “superhighway”, a groundbreaking new study suggests. The research, published in the journal ...

Off the southern coast of Iran, fishermen hauled in their catch and started sifting through it. A “large”-headed sea creature with “very small teeth” drew their attention — and for good reason. It ...

From corn mazes to haunted houses, the spooky season is in full swing. Jack-o-lanterns, ghouls and goblins are around every corner, but the scariest creatures of all might be thousands of feet below ...

Nighttime underwater photos show fish hanging out with jellyfish and anemones — perhaps seeking their protection.

While fishing off the coast of Thailand, a group of fishermen noticed a massive underwater shadow approaching their boat. It turned out to be a rare sighting of an at-risk sea creature.

While they might look harmless, experts say a Portuguese man o’ war could leave a painful sting you won’t forget.