Oceans

Moira was released into the Pacific Ocean off the coast of San Diego last month. Activities conducted under the Stranding Agreement between NMFS and SeaWorld California under the Authority of the MMPA.

After Months of Rehab, Moira the Cold-Stunned Sea Turtle Has Been Returned to the Wild

When fishermen found the endangered loggerhead sea turtle off Vancouver Island in February, she was listlessly floating in a bed of kelp

A visualization of Tiktaalik roseae, an extinct aquatic animal with fossils that shed light on the evolution of land animals from marine animals millions of years ago.

New 'Paleo-Robots' Could Shed Light on Animal Evolution, Revealing How Some Fish Evolved to 'Walk' on Land

A team of roboticists, paleontologists and biologists are building robots to simulate crucial evolutionary developments that can’t be tested with static fossils

A rock layer showing the S2 impact tsunami bed with chunks of ripped-up seafloor

A Giant Meteorite Ripped Up the Seafloor and Boiled Earth's Oceans 3.26 Billion Years Ago. Then, Life Blossomed in Its Wake

Geologists suggest the catastrophic impact of "S2" delivered key nutrients to the oceans, prompting microorganisms to thrive

Polar bears are spending more time on land as sea ice shrinks.

Polar Bears Are Exposed to More Parasites, Viruses and Bacteria as the Arctic Heats Up

Pathogens are more common in polar bears living in the Chukchi Sea now than they were three decades ago, a new study suggests—but it's not yet clear what that means for the mammals' health

A sample of ocean crust, turned upside down, reveals tubeworms and other organisms.

In a First, Scientists Find Animals Thriving Beneath the Ocean Floor in Hidden Habitats Near Deep-Sea Vents

The discovery of worms and snails confirms that these still-mysterious, dark hotspots of life extend beyond what’s visible above the crust

Aerial view of Government Point, located within Point Conception State Marine Reserve and the newly designated Chumash Heritage National Marine Sanctuary

A New Marine Sanctuary Off California Will Be Co-Managed by Indigenous Peoples

NOAA designated the Chumash Heritage National Marine Sanctuary this month, following a decade of advocacy by supporters. The protected site will be finalized after a 45-day review period

Researchers collect exhaled breath from a wild bottlenose dolphin during a health assessment conducted by the National Marine Mammal Foundation and its partners in Louisiana's Barataria Bay.

Scientists Have Found Microplastics in Dolphin Breath for the First Time

Each of the 11 dolphins sampled exhaled at least one suspected particle of microplastic, which researchers say “highlights how extensive environmental microplastic pollution is”

The Endurance was discovered resting on the seafloor east of the Antarctic Peninsula in 2022.

See the Wreck of Ernest Shackleton's 'Endurance' in Astonishing Detail With This New 3D Scan

Created from more than 25,000 high-resolution images, the digital model shows artifacts from the ill-fated expedition, including a boot, dishes and a flare gun

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Here's How Weather Balloons Can Harm Marine Animals

Latex balloons designed to collect high-altitude data can become a threat after they burst

Two comb jellies have fused together and are being probed by a pipette.

These Frankenstein-Like Sea Creatures Can Actually Fuse Their Bodies Together

Two comb jellies can merge their digestive and nervous systems and even sync their bodily functions, according to new research. The discovery could have implications for human medicine

Researchers found roughly 40 depressions on the lake bed of Lake Michigan within the Wisconsin Shipwreck Coast National Marine Sanctuary.

Mysterious Craters Discovered on the Bottom of Lake Michigan Could Hold Lessons About Early Life on Earth

Scientists aren't sure how the circular indentations some 450 feet below the surface formed, but they hope to investigate further

Two lynx shelter from the wind behind their parent, who looks into the camera.

See 15 Winning Images From the Wildlife Photographer of the Year Contest

Breathtaking shots shine a light on the wonders of wildlife and the threats that human activities pose to the natural world

Thirty-six homes—the world’s last topped with a traditional eelgrass roof—all sit here on Laeso.

Could Eelgrass Be the Next Big Bio-Based Building Material?

On the island of Laeso in Denmark, one man is reviving the lost art of eelgrass thatching and, in doing so, bringing attention to a plant that has great potential

Scientists observed two bowhead whales synchronizing dive schedules whenever they were within earshot of each other.

How Did Two Bowhead Whales That Were 60 Miles Apart Sync Their Diving?

Researchers suspect the marine mammals may have been communicating across the vast distance

Orcas are the oceans’ apex predator, even outranking the great white shark, but their hunting behaviors are still not fully understood by scientists.

Rare Drone Footage Captures Orcas Feeding on Dusky Dolphins

The predatory pod hunts off the coast of Chile and is led by a matriarch called Dakota

Jellyfish are among the planet’s simplest creatures, made up of about 95 percent water and lacking brains, spines, blood or hearts.

Delight in These 15 Photos That Capture the Exotic Undersea Lives of Jellyfish

Despite their often dangerous stings, these creatures create serene scenes as they float through the deep sea

A sea turtle swims in a coral reef in Hawaii. Ocean acidification, found to be on the brink of crossing a boundary into higher-risk territory, can affect coral skeleton formation.

Earth Is on the Brink of Breaching a Seventh of Nine 'Planetary Boundaries' That Support Life

A new “health check” for our planet sounds an alarm bell on rising ocean acidification, which is driven by carbon dioxide levels in the atmosphere

A rarely seen whiplash squid swims more than 3,500 feet below the surface of the Pacific Ocean.

See Ten Strange and Mesmerizing Creatures From the Deep Ocean, From Sea Toads to Frilled Sharks

Scientists who explore the depths using submersibles continue to discover amazing animals that inhabit dark waters

The Hinemoana Halo Waka Moana Initiative recruited 12 crew members from the Cook Islands, New Zealand, Samoa and Tonga.

An All-Female Crew Sailed 1,000 Miles in a Traditional Voyaging Canoe to Help Save Humpback Whales

The team traveled from New Zealand to Tonga along a humpback highway to collect environmental DNA and raise awareness of the plight of the marine mammals

The Australasian narrow-nosed spookfish (Harriotta avia) has a long snout and a whip-like tail.

Scientists Discover a New Species of Elusive Ghost Shark

Called the Australasian narrow-nosed spookfish, the cryptic species lives deep in the ocean off the coasts of New Zealand and Australia

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