Sweden's only remaining cold-water coral reef, the Säcken reef in the Koster Fjord, is under threat of extinction. Because of that, researchers from the University of Gothenburg have started a restoration project where healthy corals from nearby reefs in Norway are being removed and placed on the Säcken reef.

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A new study identifies countries most vulnerable to declining coral reef fisheries from a food-security perspective while providing a framework to plan for alternative protein sources needed to replace declining fisheries.

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Having too many algal symbionts makes corals bleach more severely in response to global warming, a new study shows.

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Coral reefs in Aceh, Indonesia are benefiting from a decidedly low-tech, traditional management system that dates back to the 17th century, new research shows.

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A new species of reef coral is discovered, which lives on the ceilings of dark caves. Its closest relatives are larger, have symbiotic algae in their soft tissue and need sunlight to grow. The new species lacks such algae and its tissue is colorless. When other reef coral species lose their algae, they may die, a recurring disease known as coral bleaching.

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Marine diseases are killing coral populations all over the world, threatening the livelihoods of millions of people who depend on reefs for food and protection from storms. Are these diseases new and unprecedented infections, or do they erupt from the stresses of environmental change?

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Coral reefs – ecosystems of incredible environmental and economic value – are showing evidence of significant degradation, but do not have to be doomed. We can make a difference, researchers say.

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The Great Barrier Reef has lost half its coral cover in the last 27 years. The loss was due to storm damage (48%), crown of thorns starfish (42%), and bleaching (10%), according to a new study by researchers in Australia.

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