More Corals

The Ocean Blog

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...
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...
Detail of the Smithsonian Community Reef, a local, community-created "satellite" to the Institute For Figuring's Hyperbolic Crochet Coral Reef exhibit.
This bearded fireworm ( Hermodice carunculata ) must have a strong stomach -- it’s sucking on fire coral ( Millepora sp. ), which would give the unlucky snorkeler a nasty sting. Encountered in St...
Local yarn and craft shops were highly involved in creating the Smithsonian Community Reef —the local community’s accompaniment to the Hyperbolic Crochet Coral Reef exhibit. The HCCR, created by...
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...
A photo taken at a reef near Bocas del Toro, Panama. The reef suffered a mass bleaching event in the summer of 2010, when water temperatures were unusually high. In this photo, healthy brown coral...
Much of the carbon dioxide we emit into the atmosphere ends up in the ocean. As CO 2 levels rise, seawater becomes more acidic. This change in chemistry poses a serious threat to marine organisms...
Imagine you’re an alien seeing Planet Earth for the first time. What do you see from your spacecraft? A blue planet with over 70% of its surface covered by ocean. From space it’s obvious how...
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...
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...
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, and they have done great damage on Australia's...
Portrait of a yellow-green blennie ( family Clinidae ) hiding in the groove of a green brain coral.
Searching for useful chemicals, marine scientists grow bacteria associated with deep-sea coral on nutrient agar to identify the bacteria and test their metabolic and biochemical capabilities. Some...
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.
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 ."
Discover some amazing corals in this footage that shows and identifies a range of deep-sea coral species from the Juan de Fuca Canyon
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...
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