Oceanography is the study of the oceans as ecological systems. In this section, learn about topics like currents, deep-sea research or how rogue waves work.
Worldwide Droughts Uncover Ancient Relics, Ruins and Remains
Mudlarkers Pull Historical Artifacts Out of Riverbank Muck
Ohio's Serpent Mound Is an Archaeological Mystery
Lava Isn't the Only Dangerous Aspect of Volcanoes
This Sacred Quarry Is a Cornerstone of Native American Spirituality
Why Is the Thwaites Glacier Called the 'Doomsday Glacier'?
How Deep Is the Deepest Lake in the World?
What's the Biggest State in the U.S.A.?
What Is the Mohorovicic Discontinuity and Can Humans Ever Reach It?
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Ever wondered what's the difference between a river, a stream, a brook and a tributary?
By Amanda Onion
A new study showed an alarming imbalance in the male-to-female ratio in green sea turtles hatching at the Great Barrier Reef. Scientists believe climate change is to blame.
Although we've known it exists for decades, nobody knows exactly why there's a humming noise at the bottom of the ocean. But we're one step closer now that scientists have been able to record the sound underwater.
By Mark Mancini
Environmental researchers found that large river systems with lots of surrounding residents are the sources of plastic debris in the oceans.
By Mark Mancini
Scientist and oceanographer Charles Moore confirmed the existence of a second huge plastic garbage patch in the Pacific Ocean.
Scientists are tracking the massive iceberg A-68, which recently calved from Antarctica's Larsen C ice shelf, to see where it drifts and whether it breaks up.
Measuring sea level has changed almost as much as the tides during the 200 or so years scientists have been tracking it. Find out how it's tracked today.
The Denmark Strait cataract dwarfs every other waterfall in the world, but you can't see it because it's deep under the Atlantic Ocean.
Climate change may be melting glaciers, but it's also reducing the oxygen of the world's oceans. Without oxygen, many marine organisms may no longer be able to survive.
Take a look inside the deadly brine pool in the Gulf of Mexico that's captivating the world's attention.
The NOAA ship Okeanos Explorer just wrapped up the third leg of its recent expedition into the deep Pacific waters, finding a number of cool new species.
With incredibly well-preserved metal figurines, lamps, coins and more, the sunken treasure find in Caesarea's harbor is being called the best of its kind in decades.
Underwater icicles, also called brinicles or sea stalactites, form when super-cold brine meets normal seawater. The sub-zero phenomenon can kill some sea life.
The ocean’s depths are one of the most mysterious areas on the planet – and the inhabitants of this murky domain are stranger than anything you’ll find on land.
Tubeworms aren't antisocial; they just prefer an environment that's a little different from the rest of us — one that happens to be as hot as an oven and riddled with bacteria.
By Oisin Curran
If you've ever been pulled underwater at the beach and came up sputtering with a mouthful of salt water, you might wonder where the ocean picked up that briny flavor. Read on to learn just where all that salt comes from.
By Bambi Turner
There's still a lot we don't know about the world. A thousand years ago, we thought we could literally sail off the edge of the planet. Good thing we're quick learners. But while space may be the final frontier, the ocean may be the greater mystery.
There's no denying it: "Anomaly" is a great word, full of danger and mystery. So when an underwater object is declared a bona fide anomaly, it's no surprise our ears perk up a bit. But is the Baltic Sea anomaly worth the hype or just a big old dud?
To say geologic time moves at a snail's pace is an insult to snails. Our planet's continents are always in flux: Could a new ocean grow amid those incredibly slow changes?
The oceans are rising, and they're threatening to take down some of the world's brightest cultural gems. Here are 10 of the most notable spots endangered by climate change.
By Chris Opfer
The Pacific Ocean trash vortex is explained in this article. Learn about the Pacific Ocean trash vortex.
For hundreds of years, sailors have recounted coming upon miles and miles of pale, milky, glowing waters, sometimes stretching as far as the eye can see. So what causes this milky sea phenomenon?
Desalination has long been considered too expensive and too energy-intensive to make much sense. But with newer technologies, that line of thinking is changing. What are some of the most interesting desalination projects on the planet?
Very little of the world's water is usable because of its high salt content, but a process known as desalination may help change that. How does desalination work to turn salt water into fresh water?
The Dead Sea is host to tourists who visit in droves to soak in its mineral-rich waters. Is the saltiest body of water in the world about to dry up?
By Alia Hoyt