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The Ocean Blog

Adult green sea turtles ( Chelonia mydas ) spend most of their time grazing in seagrass meadows. It's estimated that before Columbus arrived in America in 1492, the number of green turtles supported...
From the water, red mangroves appear to form an impenetrable tangle of roots, trunks, and leaves—a protective barrier against storms and tsunamis. More about mangroves can be found in our Mangroves...
Smithsonian Marine Science Network Postdoctoral Fellow, Seabird McKeon, returns from the Smithsonian field site in Belize. Together with Dan Barshis of Stanford University, Seabird reports on the...
What can students do to help the ocean? It turns out, a lot! These students from Alabama are among dozens from the U.S. and Mexico who are developing action plans on ocean and climate-related issues...
When most people think of catfish, they think of a freshwater fish. But the striped eel catfish ( Plotosus lineatus ) is found in marine systems including coral reefs, estuaries, tide pools and other...
Seagrass meadows, such as this one composed of turtle grass ( Thalassia testudinum ) and manatee grass ( Syringodium filiforme ), are an important shallow water habitat. Hundreds of animal species,...
Coral sand is aptly named: it's sand made up of tiny bits of coral and other ocean animals such as foraminifera , molluscs, and crustaceans. This image, taken at 100x zoom, took 18th place in the...
When they get larger, Portunus sayi are formidable predators, quick to consume any smaller animal that comes within reach. Fish, other crustaceans, and even smaller members of their own species are...
What can students do to help the ocean? It turns out, a lot! These students from New Jersey are among dozens from the U.S. and Mexico who are developing action plans on ocean and climate-related...
A scorpion found in a mangrove. More about mangrove ecosystem can be found in our Mangroves featured story .
This map shows the network of Coastal Ecosystem Learning Centers, which include aquariums, marine science centers, and laboratories. The network creates a partnership between federal U.S. agencies...
We drove down a long dirt road on the northern side of Curaçao looking for a remote place to snorkel and sample. After a 30-minute bumpy ride, our team stepped out of the car into a breeze and the...
A map that shows the location of mangroves throughout the world. They are mainly found in the tropics and subtropics. More about mangroves can be found in our Mangroves featured story .
The grasses and animals living in marshes help to filter water and stabilize shorelines, along with providing habitat for a variety of mammals, fish, shellfish and amphibians and a haven for...
Did you know that over 17,000 species thrive in the deep sea where no light penetrates the ocean waves? Or that an old restaurant menu can teach us about the history of fish populations? Or that...
Giant anemone. More about mangrove ecosystems can be found in the Mangroves section .
Recorded Feb. 15, 2011, this video from the Third Student Summit on the Ocean and Coasts includes a tribal song written and sung by Suquamish Tribal member Bearon Old Coyote; a welcome to the...
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