A red starfish is floating gracefully within a vibrant, blue underwater scene, surrounded by dark rocks and green seaweed.

Around the world, coral reefs are threatened by the climate crisis. Typically, the dying breath of coral is signified by bleaching — an expelling of crucial algae that turns the tissue of coral a ...

Warmer oceans are putting stress on corals—and causing many of them to turn white, or bleach. But some corals under stress are instead becoming strangely colorful, turning brilliant neon pink, yellow, ...

Add Yahoo as a preferred source to see more of our stories on Google. Corals in Australia's Great Barrier Reef spawned last week — a mysterious synchronized ritual. On a clear, calm night in the ...

Scientists have found three new species of sun corals off Sung Kong and Waglan islands in the eastern waters of Hong Kong. The discovery of these orange, violet and green corals brings the number of ...

For some corals, going bright may be part of their fight against bleaching. Higher-than-normal ocean temperatures can cause some corals to bleach and lose the beneficial algae that dwell within their ...

Coral bleaching can be devastating to a reef system. It happens when ocean water waters get too warm, prompting the corals to lose the algae that gives them much of their color. Humans are largely to ...

As oceans warm due to climate change, some coral reefs have been devastated in recent years by bleaching events that cause them to die and damage the biodiversity that depends on them. Multiple ...

A coral's color can tell of its resilience to climate change, and a new study has shed light on the underlying genetic factors that may be at work behind this. Anyone who visits the Great Barrier Reef ...

In the Northern Hemisphere, the summer of 2023 was the hottest on record. In the Caribbean, coral reefs sat in sweltering water for months—stewing in a dangerous marine heat wave that started earlier, ...

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Coral reefs around the world are indeed still at great risk. A comprehensive survey by Canadian researchers in 2021 shows that the world’s oceans have lost about half of their coral cover since the ...