More Corals

Smithsonian zoologist Dr. Steve Cairns named and described this deep-sea coral species, Stephanocyathus paliferus, which is now preserved in the collections of the National Museum of Natural History...
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...
Local crafters who contributed to the Smithsonian Community Reef proved that there is no limit to the colorful reef forms that can be created using hyperbolic crochet techniques. Their wildly...
The Pisces IV submersible sits on a saddle near Kingman Reef in Hawaii next to a gold coral ( Gerardia sp. ). The photo was taken by another Hawaii Undersea Research Laboratory submersible— Pisces V...
Species of deep-sea gold coral, or Gerardia , often have a tree-like shape, as you can see in this specimen. See more pictures of coral in our Deep-sea Corals article.
What are corals? Corals themselves are animals. But tropical reef-building corals have tiny plant-like organisms living in their tissue. The corals couldn’t survive without these microscopic algae–...
Unlike the shallow tropical coral reef pictured on the top, the deep-sea Oculina reef at bottom does not require sunlight. Learn more in the article " Coral Gardens of the Deep Sea ."
Corals are not only found in shallow tropical waters, but in cold, dark, deep areas of the sea. Amazing coral forests are found at depths of 60-3,050 meters (200-10,00 feet). They support an...
Ocean scientists safely travel to deep-sea coral ecosystems up to 3,000 m (9,843 ft) below the ocean’s surface inside the Johnson-Sea-Link , a submersible owned and operated by the Harbor Branch...
The Oculina deep-sea coral reef at top has not been disturbed by humans—but trawling has devastated the one at bottom. When fishermen trawl, they drag a net along the seafloor, destroying everything...
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...
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...
Bacteria are everywhere in the ocean. They live in the water, on virtually every living and non-living surface, and even inside other organisms . There are 1 million bacterial cells in every...
In this brief video clip from NOAA, catch a glimpse of the startling beauty and diversity of life found among deep-sea corals near the Aleutian Islands in Alaska. Explore more in the multimedia...
Discovered in 2004 and named in 2009, this Gersemia juliepackardae coral has been spotted and collected at several seamounts in the northeast Pacific Ocean at depths of 500-2,000 m (1,640-6,562 ft)...
Black corals, like this one growing on the Manning Seamount off the New England coast, often resemble bushes or trees. Contrary to its name, the living tissue of black coral can be one of several...
Branching corals, because of their more fragile structure, struggle to survive in acidified waters that surround the volcanic CO 2 seeps of Papua New Guinea. Read more about how reef scientist...
Scientists don’t often get the opportunity to travel through time. But nestled among the beautiful coral reefs of Papua New Guinea (PNG) is a place that provides a glimpse today of what could be the...
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