The world's tropical coral reefs have almost certainly crossed a point of no return as oceans warm beyond a level most can survive, a major scientific report announced on Monday.

Coral Triangle faces threats from climate change, but cryobanks offer hope for restoring and preserving endangered coral species.

Palau's corals have emerged unscathed from the world's devastating marine heatwaves. Researchers are breeding and planting them to save reefs from disappearing.

Coral reefs are a crucial part of the marine ecosystem, providing habitats for all sorts of marine life and protecting coastlines from storm damage. But scientists say rising ocean temperatures are posing a grave threat to the future of the world’s reefs.

They have been growing on subsea structures for decades but are now under threat as old platforms are decommissioned.

The ring-shaped coral islands known as atolls, like this one in the Maldives Islands in the Indian Ocean, may trace their formation to sea levels repeatedly rising and falling over hundreds of thousands of years, geologists say. Stefan Irvine / LightRocket ...

Harmful bleaching of the world’s coral has grown to include 84% of the ocean’s reefs in the most intense event of its kind in recorded history, the International Coral Reef Initiative announced Wednesday. It’s the fourth global bleaching event since ...

Harmful bleaching of the world’s coral has grown to include 84% of the ocean’s reefs in the most intense event of its kind in recorded history, the International Coral Reef Initiative announced Wednesday. It’s the fourth global bleaching event since ...