Agatized coral takes millions of years to form coral slowly replaced by quartz and chalcedony until it becomes a gemstone.

A University of Sydney student has developed a completely new way to peer inside coral fossils to recover lost records of ...

Corals, the foundation of ocean biodiversity, are threatened by climate change. But new research suggests that these ...

While it’s not helping fly the Millennium Falcon, marine biologists have discovered a new type of deep-sea coral in the western Pacific Ocean that bears a striking similarity to a certain beloved Star ...

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 ...

The world's biggest coral — an organism made up of about a billion polyps — is about three times bigger than the previous record-holder and was discovered by chance during an expedition off the ...