Humbug damselfish use 'motion dazzle' to evade predators

When thinking of animal camouflage, we typically imagine creatures remaining still, blending seamlessly into their surroundings. But remaining motionless isn't always practical, and many animals are highly mobile, constantly ...

How diversity in heat tolerance can help protect coral reefs

New research out of Southern Cross University has found previously undocumented variation in coral heat tolerance on Australia's Great Barrier Reef, giving hope that corals' own genetic resources may hold the key for us to ...

Crown-of-thorns starfish thrive in degraded coral habitats

Research into one of the most persistent coral predators on the Great Barrier Reef has revealed a troubling paradox in reef ecosystems: the crown-of-thorns starfish (COTS) appears to thrive in the very conditions of coral ...

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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