Oceans

The dogs receive training that helps enhance their natural swimming abilities and rescue instincts.

Meet the Lifeguard Dogs Watching Over Beachgoers in Maine

Buoy and Beacon are trained to help human lifeguards rescue swimmers at Scarborough Beach State Park

Researchers declare the onset of El Niño when the temperature of the water in the tropical Eastern Pacific is at least 0.9 degrees Fahrenheit (0.5 Celsius) above average for a three-month period.

El Niño Has Arrived

The natural climate pattern usually increases global temperatures and could lead to record-breaking heat

A SeaWorld team prepares to release a rescued manatee.

The Race to Save Florida’s Manatees

Researchers are nurturing sick and injured animals back to health while working to protect natural springs and curb seagrass decline

The ship has three retractable sails covered in solar panels.

Could This Futuristic Vessel Be the World's First Zero-Emissions Cruise Ship?

Hurtigruten Norway's new design includes batteries and retractable sails equipped with solar panels

Cleanup crews pressure-wash crude oil off the shoreline after the Exxon Valdez spilled more than ten million gallons into Alaska’s Prince William Sound in 1989. U.S. National Oceanic and Atmospheric Administration scientists began taking annual photos the following year to document the intertidal zone’s recovery.

Why Have Alaskans Been Photographing This Volkswagen Beetle-Sized Boulder for 33 Years?

A scientist began taking shots after the Exxon Valdez oil spill, and volunteers have since taken over

Underwater researchers have encountered many other shipwrecks while studying the Maravillas in the Bahamas.

Unraveling the Secrets of the Long-Lost Shipwrecks in the Bahamas

Using historical records, a new initiative has identified and mapped 176 wrecks in the region

A shark swims near two paddle boarders off California's coast.

Great White Sharks Come Much Closer to Swimmers Than Thought in Southern California

Juvenile white sharks and humans overlap 97 percent of the time in some warm Pacific waters, a new study finds

A close-up of an urchin found on the deep-sea expeditions in the Clarion-Clipperton Zone

These Mysterious Deep-Sea Creatures Live in a Potential Mining Zone

Scientists documented more than 5,500 animal species at the bottom of the Pacific Ocean, but thousands more might remain undiscovered

The Canary Islands are a hotspot for critically endangered angelsharks (Squatina squatina), perhaps lured by the artificial beaches that provide safe havens for juveniles.

This Engineered Beach Is Good for Endangered Sharks and Tourists

In the Canary Islands, angel sharks and humans are attracted to the same habitat which, for once, isn’t bad for the wildlife

The 144-foot Blythe Star coastal freighter

Lost for 50 Years, Mysterious Australian Shipwreck Has Finally Been Found

The "Blythe Star" sank off the coast of Tasmania in 1973, heralding improvements to the country's maritime safety laws

Brazilian reef octopuses, like other types of cephalopods, defend themselves against predators by inking and extending their mantles. 

Octopuses May Have Vivid Nightmares, Video Suggests

Costello, a male Brazilian reef octopus, had "bizarre" defensive outbursts while sleeping in a lab

The three-foot-long fiberglass mermaid sold for $300 at auction.

Who Wants to Buy the Creepy Dolls and Bowling Balls That Wash Up on Texas Beaches?

Hundreds of eclectic items were auctioned off to help fund the rehabilitation of sea turtles and birds

The Big Apple's 1,084,954 buildings weigh an estimated 1.68 trillion pounds.

New York City Is Sinking Under the Weight of Its Skyscrapers, Study Finds

As the city, and others like it, slowly subsides, it becomes more vulnerable to flooding driven by climate change

A massive ice island breaks free of the Petermann Glacier in northwestern Greenland in July 2012.

Satellites Show Warming Tides Melting a Massive Greenland Glacier

The finding could mean that past predictions of sea-level rise from glaciers should double

A close-up view of the Titanic's bow

See the Titanic in Stunning Detail With New 3D Scan

Researchers collected 16 terabytes of data to create the very first full-sized 3D scan of the wreckage

This is the first documented rainbow sea slug in a rock pool in the United Kingdom.

Rare 'Technicolor' Rainbow Sea Slug Found in England

It's only the fourth record of the species in the U.K., and experts say it's a sign of warming waters due to climate change

Lost fishing gear can continue to catch and ensnare prey, a destructive outcome called ghost fishing.

The Pioneering Project Paying for Ghost Fishing Gear

A new program is rewarding shrimpers who collect and recycle derelict crab traps

The bathysphere on deck of the Ready, 1930-1934, from Bathysphere and Nonsuch

Inside the First Deep-Sea Dive in History

In 1930, a colorful band of researchers in the Atlantic taught us how to plumb the ocean’s depths

Scalloped hammerhead sharks off the Kona coast of the Big Island of Hawaii

Hammerhead Sharks Can 'Hold Their Breath,' A First for Fish

The sharks close their gills to stay warm while hunting in deep, frigid waters, new research suggests

A high-temperature hydrothermal vent field discovered on Puy des Folles Seamount on the Mid-Atlantic Ridge at approximately 6,562 feet in depth.

See the Breathtaking Ocean Life Found at Deep-Sea Vents

An international team of scientists discovered new hydrothermal vents along the Mid-Atlantic Ridge releasing mineral-rich water hot enough to melt lead

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