Related topics: coral reefs · coral · great barrier reef

Report: Climate change damaging more World Heritage sites

Climate change is increasingly damaging the U.N.'s most cherished heritage sites, a leading conservation agency warned Wednesday, reporting that Australia's Great Barrier Reef and dozens of other natural wonders are facing ...

Reef

In nautical terminology, a reef is a rock, sandbar, or other feature lying beneath the surface of the water (six fathoms or less at low water).

Many reefs result from abiotic processes—deposition of sand, wave erosion planning down rock outcrops, and other natural processes—but the best-known reefs are the coral reefs of tropical waters developed through biotic processes dominated by corals and calcareous algae. Artificial reefs such as shipwrecks are sometimes created to enhance physical complexity on generally featureless sand bottoms in order to attract a diverse assemblage of organisms, especially fish.

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