More Corals

Crocheted corals from the Smithsonian Community Reef group on Flickr. The community reef project is a satellite reef of the Institute For Figuring’s Hyperbolic Crochet Coral Reef exhibition, was on...
One of the first signs of a sick coral reef is seaweed creeping across the corals, stealing their precious sunny real estate. Healthy corals, however, aren't completely hopeless: in some reefs, small...
A variety of organisms make their home on this tropical coral reef in Indonesia. More about coral reef ecosystems can be found in the Coral Reefs section .
Ocean scientists discovered this 1.5-m (5-ft) tall yellow bamboo coral in 2007 off the coast of Hawaii in 1,459 m (4,787 ft) of water. It is thought to represent a new genus. Learn about more deep-...
Sometimes called the rainforests of the sea, coral reefs are incredibly diverse and complicated systems. Because of this complexity, it can be a challenge to manage and protect reefs—and sometimes...
On March 1, 1954, the United States military tested nuclear bombs in the ocean around Bikini Atoll in the Pacific Ocean to see what kind of damage they would do to ships. The largest explosion was...
Dr. Brendan Roark discusses different methods of sampling deep-sea corals with undergraduate students Sam Kuykendall, left, and Beth Stockert, center, in the Stable Isotope Geosciences Facility at...
Page 1 NOAA Multimedia Discovery Missions Coral reefs are vibrant ecosystems teeming with color and life. Most grow in the warm sunlit waters of tropical seas. Beautiful and accessible, shallow water...
What is this bizarre, spiky-looking organism? Hint: it can be found in tropical areas of the Pacific and Indian ocean basins crawling slowly over coral reefs and devouring any living coral polyps...
What happens to deep-sea coral samples after they are collected? In this image gallery, see some of the ways ocean scientists sort, measure, photograph, and study them. Learn more in the multimedia...
New, white growth emerges from a living deep-sea coral sample that was stained pink, enabling ocean scientists to measure its coral growth rate. Find out more about how ocean scientists study deep-...
American Samoa National Marine Sanctuary comprises a fringing coral reef ecosystem nestled within an eroded volcanic crater on the island of Tutuila, American Samoa. The 163-acre sanctuary—the...
Sea stars are important members of marine ecosystems, especially in the tropics. We may think of tropical coral reefs as being home mainly to fish and corals, but in fact these habitats are home to a...
It is easy to feel hopeless when reading the news coverage of ocean conservation. Between climate change , acidification , pollution and overfishing, it often feels like the ocean and its...
Corals are sedentery animals, so how do they reproduce? One way is sexually through spawning , when the corals release eggs and sperm into the water (often at the same time due to some sort of...
The robotic arm of the Jason, a Remotely Operated Vehicle (ROV), collects several stalks of black coral from the seafloor. Read more about how underwater vehicles help ocean scientists study deep-sea...
For those of you who have had the opportunity to visit a coral reef , you know that it’s an experience you are unlikely to forget. Coral reefs are among the world’s most magnificent ecosystems. Their...
Good real estate is hard to find. This is as true underwater as it is on land. So when Smithsonian scientist Dr. Matthieu Leray built 18 potential homes for undersea creatures living on oyster reefs...
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