Coral Reefs

FEATURES

Blog entry
Boring sponges get a bad rap. Their own name betrays them, announcing to the world that they are unexciting, ordinary and quite frankly, boring. However, if ever a misnomer existed, this is it. More...
Blog entry MORE STORIES Blog entry MORE AUDIO / VIDEO
Australia’s Great Barrier Reef (or the GBR as it is known to reef aficionados)...
Overview MORE STORIES Overview MORE AUDIO / VIDEO
Welcome to Moorea, a tiny, isolated island in the middle of the vast Pacific...
Slideshow MORE STORIES Slideshow MORE AUDIO / VIDEO
Coral reefs are beautiful, vibrant ecosystems that house roughly one quarter of...

LATEST POSTS

Coral reefs are some of the most endangered ecosystems on the planet that are home to beautiful wildlife and provide food to many people living on the coast. So how do you protect the reefs without cutting off communities from...
Dead man’s fingers ( Alcyonium digitatum ) are soft corals named for their...
Is it lights out for corals once they have experienced a bleaching event?...

LEARN MORE

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...
Corals, sponges, and algae are the major components of most coral reef communities. To the untrained eye, they are sometimes difficult to tell apart. More about coral reef ecosystems can be found in...
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...
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...
Tropical coral reefs—found in warm, clear, shallow waters—support a rich diversity of marine life, such as these sea bass in the Red Sea. Learn more in the Ocean Portal's Coral Reefs section .
Dead man’s fingers ( Alcyonium digitatum ) are soft corals named for their appendage-like appearance when thrown ashore by storms. The finger-like clumps of coral polyps come in various shades of...
Dr. Martha Nizinski holds a specimen of a fan sponge ( Phakellia sp. ) collected at a deep-sea coral study site off the coast of South Carolina. Deep-sea corals and sponges provide structure for a...
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...
Tree corals like this Calyptrophora bayer can grow several meters high and resemble brightly colored trees. This deep-sea coral was found 1,683 m (5,522 ft) deep on the Davidson Seamount. See more...
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...
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...
Not all sharks are a dull gray: the coral catshark ( Atelomycterus marmoratus ), for example, is vibrantly colored. These sharks, which reach more than 2 feet long, live among coral reefs, eating...
Each month, the Naked Oceans podcast invites a leading marine researcher to pick the "critter of the month" by asking: if you were a marine organism, which one would you be? This month, Dr. Nancy...
This colony of Lophelia pertusa was photographed from the Mingulay Reef Complex off Scotland in 2005. Learn more about the deep-sea coral reefs in our Deep-sea Corals article.
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 .
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...
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...
There aren't any mummies or zombies buried under the seafloor: instead the ocean has its own terror from below, the bobbit worm ( Eunice aphroditois ). A couple inches wide and up to ten feet long,...
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...
Subscribe to Coral Reefs