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Bull sharks cut a threatening figure with the largest recorded bull shark reaching 11.5 feet and 500 pounds. They prey on dolphins, birds, turtles, bony fish, and other species of shark. Catching...
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...
An American crocodile ( Crocodylus acutus ) resting on a bed of seagrass . These medium-sized crocodiles are most commonly found in mangrove -lined estuaries and saltwater lagoons between the...
Giant kelp ( Macrocystis pyrifera ) is large, brown algae that grows in dense forests along coasts around the world. Long stalks anchor each plant to the seafloor, and they grow meters high like...
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...
When most people think of iconic American landscapes, we think of places on land. Yellowstone, the Great Smoky Mountains, the Grand Canyon—these national parks are household names. But many Americans...
Seagrasses don't just provide shelter for free-swimming animals, but also are a habitat for non-moving organisms, such as this sea anemone. Sessile animals attached to blades are called epibionts,...
In 1989, the Exxon Valdez oil tanker ran aground in Alaska’s Prince William Sound, spilling 11 million gallons of crude oil into the water and onto the beaches of the remote ecosystem. Richard Carson...
What can students do to help the ocean? It turns out, a lot! These students from across the United States and Mexico are developing action plans on ocean and climate-related issues in their local...
Even though the Amazon River and the ocean seem very different—the river is freshwater while the ocean is salty, the ocean is vast and deep compared to the Amazon—they are closely connected. The...
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...
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...
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 .
A scorpion found in a mangrove. More about mangrove ecosystem can be found in our Mangroves featured story .
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...
Jellyfish and comb jellies are gelatinous animals that drift through the ocean's water column around the world. They are both beautiful—the jellyfish with their pulsating bells and long, trailing...
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...
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