Coral reefs globally are facing unprecedented pressures and are particularly sensitive to climate change and extremes in temperature. Most hard corals grow thanks to a symbiotic relationship between ...

A closeup of a well-preserved Late Holocene hard pillar coral (Dendrogyra cylindrus), now genetically extinct along the Florida reef tract due to a disease outbreak in 2014.

Covering nearly 133,000 square miles (345,000 square kilometers), the Great Barrier Reef is the world’s largest coral reef, home to more than 1,500 species of fish and 411 species of hard corals.

Coralku Conservation also pointed out that tropical hard coral bleaching refers to the whitening of the coral's skeleton, which occurs when the symbiotic relationship between the coral polyp and ...

The coral reef systems of the Al Wajh lagoon on the Red Sea, the world's fourth largest barrier reef system, are estimated to host approximately 210 species of hard corals and 120 species of soft ...