Natural light flicker can help prevent detection

Movement breaks camouflage, making it risky for anything trying to hide. New research, published in the Proceedings of the Royal Society B today has shown that dynamic features common in many natural habitats, such as moving ...

Ocean deoxygenation: A silent driver of coral reef demise?

The existence of coral reefs, in all their abundant biodiversity and beauty, relies largely on a complex symbiosis between reef-building corals and microalgae. This finely tuned, fragile, partnership is constantly under threat ...

A new tool for identifying climate-adaptive coral reefs

Climate change is threatening the world's coral reefs, and saving them all will prove impossible. A team from EPFL has developed a method for identifying corals with the greatest adaptive potential to heat stress. The research, ...

Warming seas: Climate change's toll on tropical fish

In 2016, ocean temperatures soared, devastating the corals of Australia's Great Barrier Reef. As the frequency, duration and magnitude of these marine heatwaves increases due to human-induced climate change, scientists have ...

Coral reefs 'weathering' the pressure of globalization

More information about the effects human activities have on Southeast Asian coral reefs has been revealed, with researchers looking at how large-scale global pressures, combined with the El Niño Southern Oscillation (ENSO) ...

Scientists say it is time to save the red sea's coral reef

An international group of researchers led by Karine Kleinhaus, MD, of the Stony Brook University School of Marine and Atmospheric Sciences (SoMAS), calls upon UNESCO to declare the Red Sea's 4000km of coral reef as a Marine ...

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Coral reef

Coral reefs are aragonite structures produced by living organisms, found in marine waters containing few nutrients. In most reefs, the predominant organisms are stony corals, colonial cnidarians that secrete an exoskeleton of calcium carbonate. The accumulation of skeletal material, broken and piled up by wave action and bioeroders, produces a calcareous formation that supports the living corals and a great variety of other animal and plant life.

Coral reefs most commonly live in tropical waters, but deep water and cold water corals exist on a much smaller scale.

Globally, coral reefs are under threat from climate change, ocean acidification, overuse of reef resources, and harmful land-use practices. High nutrient levels such as those found in runoff from agricultural areas can harm reefs by encouraging excess algae growth.

This text uses material from Wikipedia, licensed under CC BY-SA