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The animals prefer water depths between 15 and ... In large numbers, crown-of-thorns starfish can mow down wide swaths of coral reef. The International Union for Conservation of Nature (IUCN ...

Coral reefs are the most biodiverse habitats in the oceans, and like the trees of a rainforest, the coral structures provide the structure of the ecosystem, within which other plants and animals live.

Reef sounds are beneficial to some marine animals, which use them to locate reefs – a source of food and shelter. For researchers, recent studies suggest that sound recordings could be an effective ...

Coral reefs are made up of colonies of hundreds to thousands of tiny individual corals, called polyps. These marine invertebrate animals have hard exoskeletons made of calcium carbonate, and are ...

Although they occupy less than 0.1% of the ocean floor, coral reefs are home to a quarter of all marine life - that’s more species than rainforests. Animals use reefs for shelter, food and laying eggs ...