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Water

Some researchers think that two varieties of orcas are so different that they should be considered separate species. 

Do These Severed Orca Fins Covered in Tooth Marks Mean Killer Whales Are Cannibals? It’s Complicated, Scientists Say

Researchers suggest that predation by a subspecies called Bigg’s orcas might explain why members of another one, called resident orcas, stay in such large family groups

Common eastern bumblebee queens use underwater breathing and anaerobic metabolism to survive when submerged.

Bumblebee Queens Breathe Underwater to Survive Drowning, Revealing How They Can Live Submerged for a Week

After scientists accidentally discovered that the common eastern bumblebee can withstand flood conditions, they wanted to investigate what makes that super-ability possible

The vessel is submerged 240 feet deep off the coast of Cape Hatteras, North Carolina.

See a 163-Year-Old Civil War Shipwreck in Stunning Detail With These New High-Resolution Sonar Images

The USS “Monitor” was the U.S. Navy’s first ironclad warship. The vessel, which sank off of North Carolina in 1862, revolutionized naval warfare

Swimmable Cities is a global alliance of local government officials, experts and advocates working to make urban waterways clean enough to swim in.

Would You Jump Into Your Local River? Swimmable Cities May Be Within Reach as Once-Polluted Waterways Are Restored

Efforts to improve the “swimmability” of urban areas are gaining global traction, from Paris to Chicago

Mature adults have just one verticle stripe behind their eyes.

These Clownfish Lose Their Baby Stripes in Response to Peer Pressure, New Research Suggests

Tomato clownfish perform a dramatic underwater wardrobe change based on the social dynamics of their environment

The timbers and hull planks emerged on a beach in Studland Bay after Storm Chandra.

Shipwreck Timbers Appeared on a Beach After a Storm. They Had Been Buried Beneath the Sand Since the 17th Century

Experts think the newly unearthed timbers may have come from the “Fame,” an armed Dutch merchant vessel that sank off the Dorset coast in 1631

When the project is complete, Niagara Falls State Park will feature nearly five miles of continuous shoreline along the Niagara River.

The Oldest State Park in America Is About to Expand

Niagara Falls State Park in western New York is absorbing two neighboring parks, which will add more than 150 acres and new hiking trails to its bounds

Earth's core is mostly made of the metals iron and nickel, but it also contains lighter elements like hydrogen, oxygen and silicon. 

Earth’s Core Might Hold Dozens of Oceans Worth of Hydrogen, Hinting at the Origins of the Planet’s Vast Water Supply

Scientists have long debated whether most of Earth’s vital liquid was delivered via icy comets or was homemade

The 244-pound fish was the 27th halibut caught this season.

Ice Fishermen Catch Record-Breaking 244-Pound Atlantic Halibut After Hours-Long Struggle

Six men spent more than two hours tugging the massive flatfish from a frozen fjord in Quebec as part of a research project studying halibut populations in the region

The new map revealed tens of thousands of previously undiscovered landforms.

What’s Buried Beneath Antarctica’s Ice? A New Map Unveils the Continent’s Hidden Landscape Like Never Before

A better understanding of the bedrock can help researchers calculate how quickly the continent’s melting glaciers might affect sea-level rise

A combination of warm weather, torrential rain and a recent dry spell probably contributed to the low snowpack.

Snow Drought Hits the Western United States, Worrying Experts About the Region’s Water Supply

Snow melt from the mountains provides up to 75 percent of the West’s yearly water

Aarhus, Denmark, which refers to itself as the world’s smallest big city, boasts some of the most charming neighborhoods in Europe. These two beautifully symmetrical homes capture that charm perfectly.

Coastal Cities of Europe

These 15 Delightful Photos of Denmark Will Have You Booking Your Flights to Scandinavia This Weekend

A beautiful coastal land, there’s much to see in this northern European nation

The Valles Marineris canyon system, where the scientists focused their study

Three Billion Years Ago, Mars May Have Been Half Covered by a Sea the Size of the Arctic Ocean

Data from several probes studying the Red Planet helped geologists map what seems to be an ancient coastline

Ice can take on more than 20 forms, or phases, depending on the temperature and pressure conditions as water crystallizes.

Researchers Discover a New Phase of Ice by Squeezing Water Between Diamonds

The new form, called Ice XXI, appeared at room temperature in the lab, and it may have a similar density to ice on distant moons in our solar system

Icicles form on a fence and reflect the blue sky after an ice storm.

Smithsonian Photo Contest Galleries

Get an Eyeful of These 15 Photos of Incredibly Cool Icicles

Nature’s wintry accessory, icicles help beautify snowy landscapes

More than 1.8 billion people lived under drought conditions in 2022 and 2023, according to a report from the United Nations.

United Nations Declares That the World Has Entered an Era of ‘Global Water Bankruptcy’

We’re living beyond our hydrological means and need to focus on long-term recovery, according to a new report

Just a few of the hundreds of bar-shaped whetstones found on the north shore

Cool Finds

Hundreds of Ancient Roman Blade Sharpeners Emerge From a Riverbank in England, Revealing the Ruins of a 2,000-Year-Old Whetstone Factory

Archaeologists think the newly discovered artifacts remained at the production site because they were deemed unusable. Large numbers of completed whetstones may have supplied other parts of the Roman Empire

Researchers investigated Pompeii's water system, including the "water castle" pictured here, which served as the water distribution structure for Pompeii's aqueduct. 

New Research

The Public Baths of Ancient Pompeii Were Actually Pretty Gross—Until the Romans Built an Aqueduct

Hygienic conditions were poor in the city’s older bathing facilities, a new study reveals. The analysis sheds light on Pompeii’s water systems and residents’ bathing habits

The Northerner sank in 1868 and has been resting upright on the lakebed of Lake Michigan off the coast of Wisconsin ever since.

See a 157-Year-Old Great Lakes Shipwreck in Stunning Detail With This New 3D Scan

Last year, maritime archaeologists revisited the “Northerner” in Lake Michigan and captured hundreds of still images, which they stitched together to create a digital replica of the vessel

A satellite view of a phytoplankton bloom in the Southern Ocean

Earthquakes Deep Below Antarctic Waters Seem to Have Surprising Effects on Life at the Surface

Quakes may cause ocean floor vents to release more nutrients, triggering blooms in plantlike organisms called phytoplankton in the Southern Ocean

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