A diver glides over an expanse of bone-white coral branches, recording the fish that dart between the ghostly arms extending from the sea floor off the Thai island of Koh Tao.

Climate change is warming the whole planet, but the ocean is absorbing most of that heat. That’s bad news for creatures that are sensitive to temperature changes, like corals. When waters get too ...

The new species belongs to the Clavelina genus of sea squirts. Tiny and strange, the animal measures just 20 millimetres long ...

The Coral Triangle has often been compared to the Amazon rainforest, based on the sheer scale of its biodiversity. And now, ...

Armed with scrub brushes, young scuba divers took to the waters of Florida's Alligator Reef in late July to try to help corals struggling to survive 2023's extraordinary marine heat wave.

ANDROS, Greece (Reuters) - Like colorful corals, they swayed in the underwater current. Only these were not gorgeous natural reefs built up over centuries but plastic bags, stuck to the golden ...

She was diving for samples off the Florida Keys, and the thicket of elkhorn coral below looked brown, not the stark white that would indicate bleaching from the record-breaking sea temperatures in ...