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Imagine: You’re in a small submersible, and you gently settle on the soft muddy bottom at a depth of 12,000 feet. It’s absolutely dark. What will you see when the exterior lights are turned...
Thousands of seamounts—most of them undersea volcanoes—tower above the muddy...
Smithsonian curator of fossil marine mammals Nick Pyenson and a team of...
Using maps and graphics, Smithsonian geologist Dr. Liz Cottrell provides an...

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The ocean, which we often break into five large ocean basins, covers 71 percent of the Earth's surface and holds over 1.3 billion cubic km of water. This massive space also holds over 99 percent of the area that can be inhabited...
These star-shaped grains of sand, collected from southern Japan, look like...
If you want to explore the depths of the ocean, you may want to go to the...

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Scientists from the Integrated Ocean Drilling Program (IODP) collect sediments drilled from Earth’s crust. This marine...
Climb aboard the scientific ocean drilling vessel Chikyu for a tour of this state-of-the-art research ship.
These deep-sea sediment cores were drilled from beneath the seafloor, and hold information about millions of years of ocean and atmospheric chemistry. As dirt, dead organisms, and other particles...
A dredge from the U.S. Army Corps of Engineers can be seen removing a sandbar off of Virginia Beach, VA. This type of removal occurs in order to clean up the seafloor or to allow for large ships to...
On August 23, 2011 a 5.8 earthquake emanated from the little-known Central Virginia Seismic Zone. The epicenter was near Mineral, VA, but the tremor shook homes, schools, and office buildings in...
Thousands of seamounts—most of them undersea volcanoes—tower above the muddy seafloor. They provide something hard to come by in the deep ocean : a solid surface to cling to. This photo gallery shows...
Geophysicist Jian Lin of Woods Hole Oceanographic Institution and chief U.S. scientist aboard the Chinese oceanographic ship DaYang Yihao studied the earthquake site that triggered 2004’s Indian...
An underwater archaeological stratigraphy reveals the different levels of soil in Hare Harbor, Quebec. The stratigraphy – a process archeologists use to help date materials by identifying soil layers...
An archaeologist arranges a deep-sea core from off the coast of Britain. These cores are long cylinders of the earth's crust, drilled up from beneath the seafloor. When the cores shown here are...
Discover some amazing corals in this footage that shows and identifies a range of deep-sea coral species from the Juan de Fuca Canyon
It isn’t everyday that a magnitude 5.8 earthquake strikes the East Coast of the United States . But on August 23, 2011, people from Georgia to New England felt the rumble and shaking of an earthquake...
The New England Seamount Chain is the longest in the North Atlantic Ocean. It includes more than 30 major volcanic peaks. Seamounts provide a solid surface for corals and other marine animals to...
Microscopic, single-celled organisms called foraminifera have a fossil record that extends from today to more than 500 million years ago. Although each foram is just a single cell, they build complex...
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...
On August 23, 2011 a magnitude 5.8 earthquake struck the East Coast of the United States. The earthquake map shown here, generated by the U.S. Geological Survey and regional seismic network operators...
Imagine: You’re in a small submersible, and you gently settle on the soft muddy bottom at a depth of 12,000 feet. It’s absolutely dark. What will you see when the exterior lights are turned on? Will...
There can be catastrophic results when a large amount of oil is spilled into the ocean—as when the Deepwater Horizon rig exploded and spewed oil into the Gulf of Mexico in 2010. But did you know that...
A large white coral (Corallium sp.) grows on the Balanus Seamount, part of the New England Seamount chain. Hanging on to the coral are stalkless crinoids and orange brittlestars (Opiacantha sp.) To...
The United States Geological Survey (USGS) keeps track of earthquake locations and magnitudes, accessible on the USGS website . Modern recording equipment has been in use since about 1900. While this...
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