Oceanography

You might be surprised at how little of the world's oceans scientists have investigated.

By Jennifer Walker-Journey & Austin Henderson

The oceans take up most of the surface area of our planet and remain mostly unexplored. But how many oceans are there?

By Jesslyn Shields & Austin Henderson

If it looks like a party is on, maybe they'll come back. Playing the sounds of a noisy, healthy coral reef can attract important fish species to devastated reef habitats.

By Jesslyn Shields

It covers more than 30 percent of the planet, and is home to all kinds of sea creatures. What other facts make the Pacific Ocean so amazing?

By Mark Mancini & Yara Simón

NOAA's Argo program distributes floating observatories across the globe. Why? They collect data about the world's oceans that is critical to understanding the planet.

By Jennifer Walker-Journey

Square waves also called Cross-sea waves may looks super cool. But you never want to get caught up in the grid-patterned waves they generate.

By John Perritano

EXXpedition founder Emily Penn will captain the 300, all-female crew in its first Round the World sailing voyage.

By Patty Rasmussen

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?

By Laurie L. Dove

The Southern Ocean has finally been officially recognized, though scientists have known about it for over a century.

By Jesslyn Shields

Ever wondered what's the difference between a river, a stream, a brook and a tributary?

By Amanda Onion

Ocean water is not actually blue, but appears in different shades for many reasons.

By Amanda Onion

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

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

Around 90 percent of an iceberg is under the water, but changing weight distribution caused by melting can make it flip.

By Stell Simonton

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

Anyone who's been to the ocean has probably seen the foamy white stuff that clings to the sand after a wave breaks and recedes, but what the heck causes that bubbly foam and is it dangerous?

By Kristen Hall-Geisler