Coral Reefs

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Sample the surprising diversity of deep-sea corals. See some of the ways they differ in color, shape, and size. Explore more in the multimedia feature " Coral Gardens of the Deep Sea ."
Bikini Atoll, formed over millions of years around an island in the Pacific...
Coral reefs are bustling cities of marine life, until rising ocean temperatures...
Stare at a tide pool and you will often see a crust of pink coating the bottom...

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In this photo of a shallow coral reef in the Pacific there are three species of forams . On the left, Peneroplis planatus . In the center, Amphistegina lessonii . And on the right, Laevipeneroplis sp. Their colors come from the...
This deep-sea black coral from Hawaii ( Leiopathes sp. ) is more than 4,200...
These cancer cells have been treated with discodermolide, a chemical...

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It may be the last place you’d expect to find corals—up to 6,000 m (20,000 ft) below the ocean’s surface, where the water is...

The Ocean Blog

Visitors to the Hyperbolic Crochet Coral Reef temporary exhibit at Smithsonian’s National Museum of Natural History saw both the main installation created by to the Institute For Figuring and the...
On Moorea, an island in French Polynesia, researchers are striving to complete a biocode—a DNA catalog of every life form big enough to pick up with tweezers.
For the past week, the Indonesian Biodiversity Research Center (IBRC) diving class of 2012 has seen countless fish in shades of pink, blue, yellow, red, and green darting through corals and the...
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...
When snorkeling in the Kahekili Herbivore Fisheries Management Area (KHFMA) in West Maui, I keep an eye out for certain kinds of fish. Not the brightest or the biggest, but those herbivores such as...
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...
This photo of Kingman’s Reef in the Line Islands shows what a healthy coral reef should look like. The water is crystal clear. A variety of richly colored corals carpet the seabed. And a native...
Several species of deep-sea corals form a garden 165 m (540 ft) below the ocean’s surface off the coast of Alaska’s Aleutian Islands. Explore more in the multimedia feature " Coral Gardens of the...
Bikini Atoll, formed over millions of years around an island in the Pacific Ocean about halfway between Papua New Guinea and Hawaii, has been subjected to horrific human-caused disturbances. Between...
Grey reef sharks ( Carcharhinus amblyrhynchos ) are among the most versatile and tough predators on a Pacific coral reef, but they are also among the most vulnerable species, as they are threatened...
A scuba diver explores elkhorn corals ( Acropora palmata ) growing on a tropical reef. Coral reefs provide recreation and inspiration for millions of people every year. Elkhorn coral is listed as...
These cancer cells have been treated with discodermolide, a chemical obtained from a sponge that grows on deep-sea coral reefs. It prevents the cells from dividing and spreading. Learn more about...
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–...
This coral reef in the Western Pacific Ocean was killed by human input of silt and sand from nearby islands reaching the coral reef habitat. More about coral reef ecosystems can be found in our Coral...
When we think "Africa," we think of the "Big Five"—lions, elephants, leopards, buffalo and rhinos—that crisscross the African Savannah. Few would imagine that there could be more natural beauty on...
Just like other seahorse species, male weedy sea dragons are the ones to get 'pregnant' and give birth to the babies. To show he is ready to hold eggs, the male wrinkles part of his tail. On this...
Two events made me passionate about deep-sea corals . One was my first submarine dive in a deep-sea coral bed off the Hawaiian island of Oahu. There was an incredibly lush community of corals and...
Stare at a tide pool and you will often see a crust of pink coating the bottom. No, this is not bubblegum from some careless teenager’s shoe: it’s a stony kind of seaweed that, like other seaweeds,...
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