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Coral Reefs

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BLOG POST Making Science Sing: The Longest Time (Coral Triangle Edition) How do you make science sing? Just ask a couple of female scientists to sing about their research interests and their passion is quickly conveyed in a quirky little tune. Informative, inspir...MORE STORIES


	IMAGE GALLERY MORE GALLERIES Two Views of Coral Reefs: Thriving and Threatened Coral reefs are beautiful, vibrant ecosystems that house roughly one quarter of...
	BLOG POST MORE STORIES Hotspot of Biodiversity We have arrived as the advanced scouting party to the scene of this year's field...
	IMAGE GALLERY MORE GALLERIES Will Coral Reefs Survive Acidification? Nestled among the beautiful coral reefs of Papua New Guinea (PNG) is a place tha...

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					A School of Hawaiian Squirrelfish Apr 10, 2013 - 9:03AMCheck out the eyes on these Hawaiian squirrelfish (Sargocentron xantherythrum)! Because squirrelfish are almost entirely nocturnal, they need big eyes to absorb as much moonlight and starlight as they can in the dark. During the...

From Sea Sponge to HIV Medicine

Mar 26, 2013 - 9:40AM

Tectitethya crypta (formerly known as Cryptotheca crypta) is a large,...

Coral Spawning

Mar 15, 2013 - 9:07AM

Corals are sedentery animals, so how do they reproduce? One way is sexually...

SPOTLIGHT


Corals and Coral Reefs Coral reefs are the most diverse of all marine ecosystems. They teem with life, with perhaps one quarter of all ocean...

Dr. Stephen Cairns Jan 26 2010 - 11:45am Dr. Stephen Cairns is a research zoologist and chair of the Department of Invertebrate Zoology at the Smithsonian’s National Museum of Natural History. His research focuses on the diversity, distribution, and evolution of deep-water corals—both fossil and living. Learn all about deep sea corals in...	Bleached Corals, Pacific Ocean Jan 26 2010 - 11:45am Compare the healthy coral on the left with the bleached coral on the right. Increased water temperatures caused the bleached coral to lose the microscopic algae that give the coral color and provide it with food. More about coral reef ecosystems can be found in the Coral Reefs section.
Coral Reef Covered by Silt and Sand Jan 26 2010 - 11:45am 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 Reefs featured story.	Undisturbed vs. Trawled Reef Jun 7 2011 - 11:36am The Oculina deep-sea coral reef at top has not been disturbed by humans. Trawling has devastated the one at bottom. Only about 10 percent of Oculina habitat remains intact. Learn more about vulnerable deep-sea corals in the multimedia feature "Coral Gardens of the Deep Sea."
Hotspot of Biodiversity Jun 20 2012 - 9:22am We have arrived as the advanced scouting party to the scene of this year's field work location: Pemuteran, a small fishing village in northwest Bali. More importantly, we are sitting squarely at the heart of marine biodiversity at the "Coral Triangle" -- that small part of the globe where, if space...	A School of Hawaiian Squirrelfish Apr 10 2013 - 9:03am Check out the eyes on these Hawaiian squirrelfish (Sargocentron xantherythrum)! Because squirrelfish are almost entirely nocturnal, they need big eyes to absorb as much moonlight and starlight as they can in the dark. During the day, they hide out in the nooks and crannies of tropical coral reefs....
Coral Thicket with Lobster Jun 7 2011 - 12:16pm A thicket of white stony coral (Lophelia pertusa) shelters a squat lobster (Eumunida picta). This is the typical shape of this widespread species of deep-sea coral. See more pictures of coral in our Deep-sea Corals article.	Corals and Coral Reefs Sep 12 2012 - 11:02am Coral reefs are the most diverse of all marine ecosystems. They teem with life, with perhaps one quarter of all ocean species depending on reefs for food and shelter. This is a remarkable statistic when you consider that reefs cover just a tiny fraction (less than one percent) of the earth’s...
Purple Sea Urchin Aug 10 2012 - 3:27pm This purple urchin Paleopneustes cristatus is seldom seen by itself, and can be found in groups of hundreds. Dr. Dave Pawson, a senior scientist at NMNH who studies deep-sea echinoderms, is testing if the fertilized eggs of this urchin sink or are buoyant, an important question in...	Coral Spawning Mar 15 2013 - 9:07am 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 trigger). External sexual reproduction occurs when colonies of coral release huge numbers of eggs and sperm...
A Pleasant Surprise: The Recovery of Bleached Panamanian Corals Apr 18 2011 - 1:36pm Last September, the Citizens of the Sea blog series brought you a story of doom and gloom from the reefs of Bocas del Toro, Panama. That is the time of year we typically study -- and celebrate -- the annual birth of baby corals in the area. We arrived to find very hot water (2010 turned out to...	Deep-Sea Coral Community Jul 27 2011 - 10:46am Dr. Amy Baco-Taylor observed corals like these on her first submarine dive to a deep-sea coral bed off the coast of Hawaii. They include primnoids, zoanthids, and Gerardia.
Australia's 1.2 Million Mile Marine Reserve Feb 13 2013 - 10:55am In November 2012, Australia began protecting a huge swath of its ocean from overfishing and oil exploration, creating the largest network of marine reserves in the world at a grand total of 1.2 million square miles (3.1 million square kilometers). The area, a third of the continent’s territorial...	Submersible with Coral Samples Jun 7 2011 - 1:00pm The Johnson-Sea-Link submersible reaches the ocean’s surface with a specimen of Keratoisis bamboo coral inside its collection box. Find out how ocean scientists study deep-sea corals in our Deep-sea Corals article.
Unhealthy Coral Reef, Kiritimi, Line Islands Dec 7 2009 - 1:48pm Algae has overtaken this coral reef off heavily populated Kiritimati, or Christmas Island. Few fish swim in the murky waters. The causes include pollution, overfishing, and increased water temperature. More about coral reef ecosystems can be found in our Coral Reefs featured story.	White Christmas Tree Worm Dec 20 2012 - 10:40am The festive Christmas tree worm (Spirobranchus giganteus) lives on tropical coral reefs and resembles a fluffy fir tree adorned with ornaments. The multi-functional branch-like appendages are used by the worm to breathe and to catch meals of plankton floating by. See more holiday-themed animals!