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, ...

Researchers said the rare species “abruptly disappeared” from the region following an El Niño event. Now it is thriving.

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 ...