Coral Reefs

LATEST TODAY'S CATCH

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...
Mar 26, 2013 - 9:40AM
Tectitethya crypta (formerly known as Cryptotheca crypta) is a large,...
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...
Jan 26 2010 - 11:46am
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 predator, a red snapper, prowls for prey.
Jan 26 2010 - 11:45am
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.
Jan 26 2010 - 11:45am
Dr. Valerie Paul is studying chemical defenses that may protect coral reefs from many species of herbivores that live on coral reefs. In this picture she is examining tropical seaweeds on northwestern Guam’s coral reefs. Dr. Paul is the director of the Smithsonian Marine Station (SMS) at Fort...
Dec 5 2012 - 12:15pm
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 icy cold and the light dim or absent. Yet believe it or not, lush coral gardens thrive here. In fact, scientists have discovered nearly as many species of deep-sea...
Oct 15 2012 - 1:44pm
Welcome to Moorea, a tiny, isolated island in the middle of the vast Pacific. Moorea is 132 square kilometers (51 square miles) of tropical ecosystems – from jungle and wetlands to beaches and coral reefs – with no major landmasses for thousands of miles. While it may look like the perfect vacation...
Oct 3 2010 - 7:25pm
A crown-of-thorns starfish (Acanthaster planci) on a reef in the Marianas Islands. An “outbreak” of these coral-eating starfish can decimate a reef.
Jun 6 2011 - 12:11pm
A squat lobster and blackbelly rosefish find shelter on a Lophelia pertusa coral reef off the southeastern United States. The Johnson-Sea-Link submersible captured this image in 2009.
Nov 8 2010 - 2:15pm
The Tubbataha Reefs National Park site in the Philippines was inscribed on the World Heritage List in 1993. The site is an example of a pristine coral reef with a spectacular 100 m (330 ft) perpendicular wall, extensive lagoons, and two coral islands – all of which supports a diverse marine...
Coral Forests of the Deep Ocean
Jan 14 2011 - 12:27pm
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 abundance of marine life but are in peril from threats such as ocean acidification and bottom trawl fishing...
Jan 26 2010 - 11:45am
The long silver tool shown here is a piece of traditional Australian fishing gear called a “yabbie pump.” Researchers use the device to collect burrowing shrimp and other fast-moving animals from the shallow waters near the island of Moorea. Learn more in our Scientists Catalog Life on the...
Dec 3 2009 - 1:14pm
Tiny plant-like organisms called zooxanthella live in the tissues of many animals, including some corals, anemones, and jellyfish, sponges, flatworms, mollusks and foraminifera. These microscopic algae capture sunlight and convert it into energy, just like plants, to provide essential nutrients to...
Aug 2 2012 - 3:08pm
Close to the volcanic CO2 seeps the vast diversity of corals that exists in less-acidic waters is replaced by a "monoculture" of boulder corals that are less fragile and better suited to life in acidic water. 
Welcome to the Moorea Biocode Project
Apr 21 2010 - 11:28am
Scientists journey to the isolated island of Moorea on a quest to catalog every life form big enough to pick up with tweezers—from mountaintop to seafloor. Get up close and personal with researchers in the field and see how they combine high-tech equipment and old-fashioned elbow grease to tackle...
Tridacna maxima
Nov 9 2010 - 12:54pm
Marine World Heritage is a prestigious list of 43 marine ecosystems and biodiversity treasures from across the globe, including  countries such as Australia, Iceland, Russia, South Africa, the Phillippines, United States, and Yemen. Together, they can be considered the “Crown Jewels of our...
Jul 27 2011 - 11:49am
Nine years ago I was invited by a colleague to join a research team investigating deep-sea coral habitats. I was asked to examine the invertebrates associated with these ecosystems. After my first look, I was hooked! I was fascinated by the sheer beauty and complexity of these deep-sea environments...
Oct 2 2012 - 2:28pm
Australia’s Great Barrier Reef (or the GBR as it is known to reef aficionados) stretches for more than 2,300 kilometers (over 1,429 miles) and can be seen from outer space. This largest barrier reef in the world is both a national icon and a global treasure that was recognized as a World Heritage...