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.
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What Causes High Tide and Low Tide? Why Are There Two Tides Each Day?
The super-cool phenomenon of tidal bores happens in only a few places on the globe, and it takes a very specific set of conditions to occur.
By Mark Mancini Oct 12, 2018
Around 90 percent of an iceberg is under the water, but changing weight distribution caused by melting can make it flip.
By Stell Simonton Oct 8, 2018
All that seashell collecting you've been doing actually hurts the environment.
By Mark Mancini Aug 13, 2018
Harmful algal blooms wreak havoc in oceans around the world and occur nearly every summer along the coastline of Florida.
By Patrick J. Kiger Jul 11, 2018
He might be the most important scientist you've never heard of, but the ocean current that bears his name helped shape the development of evolutionary theory.
By Patrick J. Kiger Apr 12, 2018
Blue whales are the largest mammal ever known to exist on Earth. So what makes these creatures so huge?
By Kristen Hall-Geisler Mar 29, 2018
Ocean water is not actually blue, but appears in different shades for many reasons.
By Amanda Onion Mar 29, 2018
Water covers about 71 percent of Earth's surface, but do you know the difference between an ocean and a sea? And which ocean is the smallest?
By Amanda Onion Mar 22, 2018
Ever wondered what's the difference between a river, a stream, a brook and a tributary?
By Amanda Onion Mar 21, 2018
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.
By Nathan Chandler Jan 29, 2018
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 Dec 14, 2017
Environmental researchers found that large river systems with lots of surrounding residents are the sources of plastic debris in the oceans.
By Mark Mancini Oct 25, 2017
Scientist and oceanographer Charles Moore confirmed the existence of a second huge plastic garbage patch in the Pacific Ocean.
By John Perritano Jul 27, 2017
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.
By Patrick J. Kiger Jul 24, 2017
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.
By John Perritano Jul 19, 2017
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.
By Jesslyn Shields Jun 28, 2017
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.
By John Perritano Feb 23, 2017
Take a look inside the deadly brine pool in the Gulf of Mexico that's captivating the world's attention.
By Jesslyn Shields Nov 21, 2016
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.
By Christopher Hassiotis Jul 18, 2016
A mind-boggling number of Earth’s species have yet to be discovered. A NOAA research team aboard the Okeanos Explorer is hunting in the deepest hole in the ocean.
By Jesslyn Shields May 18, 2016
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.
By Christopher Hassiotis May 17, 2016
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.
By Patrick J. Kiger Jan 5, 2016
SeaOrbiter would allow scientists to live at sea, and could be the aquatic equivalent of the International Space Station – if it can get the $53 million needed to finish.
By Patrick J. Kiger Dec 8, 2015
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
Sea Cucumber: Animal or Vegetable?
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