A transparent goby fish drifted through the darkness, its skeleton visible through paper-thin skin. Nearby, a sea slug wore ...

This animal lives so deep within the Antarctic pack ice that its life history is not very well understood,' photographer Justin Hofman wrote ...

Getting enough oxygen in the water can be hard work. While fish and many other aquatic animals take air directly from the water through gills, other animals find ingenious ways to drag air bubbles ...

For an animal, surviving in the ocean's deepest trenches requires remarkable adaptations: a gelatinous body that can withstand pressure, bioluminescent features to guide it, and a transparent ...

This secretive native of both sides of the Caribbean—from Belize to the British Virgin Islands—hides out on ledges and in caves of reefs up to 140 feet below the surface of the sea. Although not being ...