The "large, conspicuous" animals are often seen by divers in the Galapagos Islands but went misidentified for over 180 years ...

Coral reefs in Honolulu and other coastal areas are undergoing what experts say is the world's worst coral bleaching event.

As warming waters devastate coral around the world, the sea’s stunningly colorful reefs ... Getty Images Behind a backdrop of purple, blue and pink coral during a dive at Ras Mohammed National ...

All that lay below us was a short, stony strip of grass with nothing but the blue Coral Sea beyond. Our landing, though, was surprisingly gentle, and we were welcomed by Andreas Supper ...

Under the crystal blue waters of Mo’orea, French Polynesia, are ghostly formations of dead coral. That graveyard is generally where crabs didn’t used to live and sea stars of various sizes and ...

NOAA scientists exploring deep-water areas of the Caribbean Sea uncovered what they described as unknown organisms that appeared blue and formless ... was a soft coral, a sponge, or a tunicate ...

A new exploration of a legendary blue hole in the South China ... which is a well-known feature in Yongle, a coral reef near the Xisha Islands in the South China Sea, according to Xinhua.

Then the smell hits you. Dubbed "sea sawdust", the blue-green algae bacteria Trichodesmium has turned the normally blue Coral Sea off the Mackay coastline shades of brown, green and pink.