A giant phantom jellyfish floats in the Bellingshausen Sea off Antarctica.

A Chicago-Sized Iceberg Broke Off From Antarctica, Revealing a Hidden Ecosystem Never Seen Before

When the A-84 iceberg calved in January, it unveiled a 209-square-mile swath of seafloor. Nearby scientists rushed to the scene for the “unprecedented” look below

An Antarctic skua, one of the birds hardest hit by avian flu in the region. 

Avian Flu Is Rapidly Spreading Across Antarctica

A new expedition offers insights on the deadly virus’ impact in the region

Scientists are investigating how Adélie penguin colonies along the coast of Antarctica’s Ross Sea have adapted over the last 6,000 years.

Scientists Uncover a Frozen History in 6,000 Years’ Worth of Penguin Poop, Revealing Past Ecology on Antarctica

Sediment samples from the Ross Sea coastline are revealing insights into how animals like elephant seals and Adélie penguins adapted to environmental changes long ago

Vietnam’s Hien Luong pedestrian bridge across the Ben Hai River is located along the 17th parallel, the former demarcation line between North and South Vietnam.

Former and Active DMZs Allow Visitors to Learn the Haunting History of These Landscapes

Demilitarized zones—from Vietnam to Korea, Cyprus and Antarctica—require tourists to look beyond what exists and to find the real stories in what doesn’t

Individual Antarctic krill are small, but the animals live in gigantic groups that can be seen from space.

Tiny Antarctic Krill Benefit the Planet in Big Ways, but Face a Barrage of Threats

The bountiful creatures sequester carbon and are a vital food source for marine predators, but their future is uncertain

The iceberg A23a, seen in the South Atlantic Ocean near South Georgia and the South Sandwich Islands in November 2024

The World’s Largest Iceberg Runs Aground, Potentially Averting a Collision With Penguin and Seal Breeding Areas

After months of floating, the “megaberg” known as A23a has finally come to a halt roughly 50 miles from South Georgia Island

An illustration of the Antarctic Circumpolar Current, with branches connecting to other ocean currents

Earth’s Strongest Ocean Current Could Slow 20 Percent by 2050 Because of Climate Change, Study Finds

The Antarctic Circumpolar Current is involved in everything from storing carbon to guarding Antarctica from invasive marine species, and a slower current could have far-reaching consequences

An illustration of the Vegavis iaai diving for fish off the coast of the Antarctic peninsula.

Paleontologists Discover Fossil of the Oldest Known Modern Bird—but It Raises More Questions Than It Answers

The fossil suggests that modern birds evolved before the dinosaur-killing asteroid, perhaps in Antarctica

Ernest Shackleton salutes from the Endurance on August 1, 1914, when the ship set sail from London on the Imperial Trans-Antarctic Expedition.

Ernest Shackleton’s Famous Job Ad, ‘Men Wanted for Hazardous Journey,’ Is Probably a Myth

Citizen historians have spent decades searching for the original text of Shackleton’s advertisement. Now, some say it might never have existed

An international team of scientists spent four summers working in average temperatures of -25.6 degrees Fahrenheit.

Scientists Drill 1.7 Miles Into Antarctic Ice, Revealing 1.2 Million Years of Climate History

Researchers say a collected sample is the longest continuous record of Earth’s past climate from an ice core

The world's largest iceberg, A23a, is on the move again after spending the last few months stuck in an ocean vortex.

The World’s Largest Iceberg Is Free-Floating Again, and It Could Help Build ‘Thriving Ecosystems’

After spending months stuck in a swirling ocean vortex, iceberg A23a is once again drifting through the Southern Ocean, offering scientists a glimpse into how it might affect waters in new regions

Researchers used a line array of hydrophones towed behind a ship for three weeks in the 1980s. They collected data nonstop, listening to all the sounds in the ocean. One such sound was the enigmatic "quacking" that one expert now says might represent a conversation.

Mysterious, Repetitive ‘Quacking’ Noise in the Southern Ocean May Have Been a Conversation Between Whales

During a 1982 experiment, researchers recorded the unusual sound, termed “bio-duck.” Now, a researcher suggests they may have been listening in on animals talking to each other

Gus did not hesitate to belly flop into the ocean.

Gus, the Young Emperor Penguin Who Made a Surprise Appearance in Australia, Is Now Heading Home

Wildlife caretakers released the bird into the Southern Ocean after he’d put on some weight and regained his strength

Robert Falcon Scott (far left) and his crew at the South Pole in January 1912

On This Day in History

When a Search Party Discovered the Frozen Body of a British Explorer Who Raced to the South Pole—and Lost

On this day in 1912, a team found the remains of Robert Falcon Scott and the crew of the “Terra Nova” expedition. A would-be rescuer said he was forever haunted by the “horrible nightmare”

The penguin was malnourished after swimming thousands of miles from Antarctica.

Surfer Spots an Emperor Penguin on a Beach in Australia, Thousands of Miles From Its Antarctic Home

It’s not clear how the juvenile male ended up so far north, but experts suggest he was motivated by his appetite

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

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

The A23a iceberg, photographed last December. It first split from Antartica in 1986 and stayed in the Weddell Sea until 2020, when it started drifting away.

The World’s Largest Iceberg Is Stuck in a Spinning Ocean Vortex

The mega iceberg A23a is destined to melt after breaking free from Antarctica in 1986, but this pause in its journey is delaying its fate, experts say

A photograph of the Endurance stuck in ice before it sank to the bottom of the Weddell Sea in 1915

Wreck of Shackleton’s ‘Endurance’ Gets New Protections

The vessel will be preserved beneath Antarctic waters inside a sprawling restricted zone

In order to build ships strong and technically savvy enough to traverse through some of the most remote and challenging landscapes on Earth, several cruise companies borrowed designs from other parts of the shipping industry.

How a New Line of Expedition Ships Is Turning the Tides on Polar Seas

High-tech features are making treacherous ocean passages feel tame

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