Most corals are colonial animals - superorganisms comprising lots of smaller organisms - made up of multitudes sea anemone-like coral polyps. In the reef-building "hard corals", the polyps sit in ...

Reefs are one of the most diverse ecosystems in the world. For this reason, coral reefs are often referred to as the rainforests of the oceans. It is believed that around one quarter of all ocean ...

In large numbers, crown-of-thorns starfish can mow down wide swaths of coral reef. The International Union for Conservation of Nature (IUCN) reports that Acropora species are in the top three ...

The Coral Triangle is a marine region that spans those parts of Indonesia, Malaysia, Papua New Guinea, the Philippines, the Solomon Islands and Timor-Leste with at least 500 species of reef-building ...

In the coastal seas episode, we see the devastating scenes of coral bleaching – how whole reef ecosystems which once teamed with life, are now dead, white and derelict. But what exactly is coral ...