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The Ocean Blog

Broad-leaf seagrass ( Posidonia australis ) with algae epiphytes grows at Corner Inlet Marine National Park in Australia . The marine park protects large areas of seagrass habitat from fishing—but it...
Marc Frischer, a microbial ecologist at the Skidaway Institute of Oceanography , collects bacteria at the Smithsonian Institution’s field station in Belize. Smithsonian scientists and colleagues from...
Arching mangrove roots like these help keep trunks upright in the soft sediments at water’s edge. More about mangroves can be found in our Mangroves featured story .
By Caty Fairclough In centuries past, the ocean was thought to be full of krakens, sea serpents, sea monsters and other fantastic creatures. They helped to bring the mysterious ocean into the more...
Giant anemone. More about mangrove ecosystems can be found in the Mangroves section .
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...
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...
What is climate change, and how is it affecting coastal Carolina? That is the question that a group teens from Isaac Bear Early College High School set out to answer for their Third National Student...
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...
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...
What can students do to help the ocean? It turns out, a lot! These students are among dozens from the U.S. and Mexico who are developing action plans on ocean and climate-related issues in their...
Happy (early) Independence Day! For many of us in the United States, the 4th of July is a time to celebrate and reflect on our national heritage. In many ways, the U.S. grew up on the water and...
Squids, octopuses and cuttlefish, such as this Australian Giant Cuttlefish ( Sepia apama ), compose just one group of animals that call seagrass beds home. Clams and worms bury themselves in the mud...
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...
The blue lined octopus may be small, growing to at most 15 cm, but it can be deadly: its venom can cause breathing failure in humans as well as other animals. Turtles can accidentally consume the...
A scorpion found in a mangrove. More about mangrove ecosystem can be found in our Mangroves featured story .
The 2010 Deepwater Horizon oil spill brought the world's attention to the Gulf of Mexico and raised awareness of the region's chronic loss of wetlands as well as the massive dead zone caused by...
Two years ago last week, on April 20, 2010, an explosion on the oil-drilling rig Deepwater Horizon caused the largest marine oil spill in history , gushing nearly 5 million barrels of crude oil over...
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