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Sea turtles may have survived the planetary changes that killed the dinosaurs, but now they are threatened by fisheries. It's estimated that some 4,600 sea turtles are killed by fishing nets and hooks every...
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If there had been room to stand up, there would have been a standing ovation...
Blog entry MORE STORIES Blog entry MORE AUDIO / VIDEO
Microbes are some of the most important organisms in the sea. These miniscule...
Scientists from the Integrated Ocean Drilling Program (IODP) collect sediments...

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The first time biologist Mandy Joye dove to the deep sea in the Johnson-Sea-Link submersible (pictured here), she had never seen the bubbles of a methane seep. But after that fateful day in 1994, she was entranced. Instead of...
AUV Sentry is an autonomous underwater vehicle (AUV) that was used in the...
On March 1, 1954, the United States military tested nuclear bombs in the...

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Take a tour of the Alvin, a three-person submersible that allows scientists to explore the depths of the ocean. This is an...
Marine biologist Mette Kaufman measures the temperature of a recently-drilled ice core . Variations in temperature at different points of the ice core provide information about the living conditions...
Smithsonian researchers are using this five-person submersible to study the biodiversity of the deep reefs of Curaçao in the southern Caribbean. Read about their adventures in the Summer in a Sub...
A robotic arm on the Johnson-Sea-Link submersible retrieves Galatheid crabs for research. Growing in the background is a species of the deep-sea coral Lophelia. Explore more in the multimedia feature...
Part 2 of a 6-part series describing Woods Hole Oceanographic Institution's (WHOI) efforts to understand the scope and impact of the Deepwater Horizon oil spill in the Gulf of Mexico. "How Much Oil...
A hybrid underwater vehicle combines the best features of an ROV (remotely operated vehicle), which is connected to a ship in order to transmit data and video feeds, and an AUV (autonomous underwater...
When he was 10 years old, Stephen Cairns lived in Cuba where he kept a collection of butterflies and sea shells. When his family moved to Louisiana, he could bring only one of the collections with...
Doing scientific research on a ship isn't always easy. On top of having to live and sleep on a boat on the water, you have to fit all your scientific equipment onboard—and make sure it continues...
Take a tour of the Alvin, a three-person submersible that allows scientists to explore the depths of the ocean. This is an excerpt from the full Deep Ocean Explorers video. More about deep ocean...
Dive through the zones of the ocean to the deep ocean bottom, where many strange species live, and there are many yet to be discovered. Explore them in the Deep Ocean Exploration section.
Humpback whales ( Megaptera novaengliae ) are the most abundant baleen whale in the nearshore waters around the Antarctic Peninsula. They, along with millions of penguins, seals, seabirds, and other...
Researchers collect underwater noises with autonomous recorders.
As I readied myself and my camera for a dive in Yellowstone Lake, the largest body of water in Wyoming’s Yellowstone National Park, I thought I was on top of my game. I had recently specialized in...
Algae, like all organisms, normally grow in balance with their ecosystems, limited by the amount of nutrients in the water. But sometimes, certain species of algae reproduce so rapidly that they...
This Japanese research ship Chikyu drills into the ocean floor to learn about Earth’s history and structure, and the mechanism of earthquakes in particular. Completed in 2005, it is the first...
Tectitethya crypta (formerly known as Cryptotheca crypta ) is a large, shallow-water sponge found in the Caribbean. It was first studied for medical purposes in the 1950s when few scientists or...
Deploying ARMS (Autonomous Reef Monitoring Structures) is tricky in the deep sea, where SCUBA divers can't place and secure them to the floor with their hands and a hammer. Researchers with DROP (...
Last week, Smithsonian research zoologists Dr. Jerry Harasewych and Dr. Martha Nizinski were in Curaçao looking for deep-sea marine gastropods and decapod crustaceans , respectively. I learned they...
Ice divers Katrin Iken (left) and Elizabeth Siddon are about to descend through a hole in the Arctic ice and into the frigid world below.
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