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Oceans

Glowing "milky seas," seen here from a satellite, have confused and captivated sailors for centuries.

Glowing ‘Milky Seas’ Have Baffled Sailors for Centuries—New Research Brings Scientists One Step Closer to Solving the Mystery

Historical accounts of vast ocean waters glowing in the dark go back hundreds of years, and researchers are still trying to determine exactly what triggers the phenomenon

The bow of the Titanic

See the Titanic in Remarkable Detail With a 3D Scan That Reveals New Secrets of the Doomed Ship’s Final Moments

A documentary called “Titanic: The Digital Resurrection” will unveil the most detailed digital reconstruction of the shipwreck ever created. Experts are using the model to study the vessel’s demise

A species of remipede known from the Caicos Islands. The photograph was taken by a member of a multinational team looking for rare species. Remipedes are crustaceans that are close relatives to insects.

You Might Think of Shrimp as Bugs of the Sea. But a Remarkable Discovery Shows the Opposite: Bugs Are Actually Shrimp of the Land

A recent study suggests that insects branched out from crustaceans on the tree of life

Also known as by-the-wind sailors, the free-floating Velella velella are coating California beaches once again.

Odd-Looking Blue Creatures Are Washing Up in Large Groups on California’s Beaches Once Again

Strandings of these jellyfish-like animals, sometimes called “by-the-wind sailors,” usually mean spring is coming

Volunteers with the Channel Islands Marine & Wildlife Institute in Santa Barbara, California, rescue a sick sea lion that's likely suffering from domoic acid poisoning.

Sea Lion Bites Surfer Amid One of the Worst Outbreaks of Domoic Acid Poisoning That California Wildlife Rescuers Can Remember

Sea lions, dolphins and birds are sick and dying because of a toxic algae bloom in Southern California—and animal care organizations are overwhelmed by the scale

Scientists recorded rig sharks producing sounds—potentially with their teeth. The clip is thought to be the first documentation of its kind.

Listen to the First Known Recording of Shark Sounds, a ‘Weird’ Audio Clip Captured at a Marine Lab in New Zealand

Researchers detected short clicking noises from rig sharks during handling in the lab, though they’re not sure why or how the sound is produced

Researchers spotted an orange blob near a shark's head. It turned out to be an octopus along for a ride.

Watch an Octopus Hitch a Ride on a Shark—an Unusual Duo Dubbed the ‘Sharktopus’

Researchers in New Zealand captured the odd pairing on video, but they still don’t know how to explain the behavior

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

A male central Fijian banded iguana from Ovalau Island, Fiji.

Iguanas Floated a Whopping 5,000 Miles From North America to Fiji on Rafts of Plants in a Record-Setting Trip, Study Suggests

Since most iguana species live in the Americas, biologists have long debated how they could have arrived on the remote Pacific island in the first place

A NASA image of Florida in 1992. Coastal communities are most the vulnerable to the effects of sea level rise.

Sea Levels Rose More Than Expected in 2024, According to a NASA Analysis

Ocean warming and thus thermal expansion played a major role in last year’s increase

A squat lobster discovered near Easter Island, one of the many newly identified species by the Ocean Census

From a Guitar Shark to an Octocoral, Scientists Discover More Than 800 Marine Species

The Ocean Census hopes to discover thousands of new creatures before they go extinct

Crops around the world—including corn, wheat and rice—might suffer from decreased yields as a result of microplastics interfering with photosynthesis, according to a new study.

Microplastics Are Making Photosynthesis Harder for Plants—and That Could Slash Crop Yields, Study Suggests

On average, these little particles could reduce photosynthesis in plants and algae by up to 12 percent, according to the paper

When they're alarmed, blue-lined octopuses display iridescent blue rings on their arms to ward off approaching predators.

These Male Octopuses Use Venom to Subdue Female Mates—and Avoid Being Eaten After Sex

Scientists observed male blue-lined octopuses injecting tetrodotoxin into females, which rendered them immobile for mating

A new study suggests that the lemon shark, pictured here, is a better analogue for the megalodon's size than a great white.

Megalodon Might Have Been Longer and Skinnier Than Previously Thought, Growing Up to 80 Feet

A new paper suggests the enormous, extinct shark looked less like a bulky great white and more like an elongated lemon shark

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

A hatchling Kemp's ridley sea turtle

Inside the Herculean Effort to Study and Save the World’s Smallest Sea Turtle

After years of steady gains, a decades-long conservation program dedicated to the Kemp’s ridley hits rough seas

The Palos Verdes Peninsula in Los Angeles experiences slow-moving landslides that accelerated last fall, according to recent research.

Parts of California Are Sinking, and It Could Worsen the Effects of Sea-Level Rise, NASA Study Finds

The ground in many parts of the state—including Los Angeles, San Francisco and the Central Valley—is subsiding due to groundwater withdrawal, landslides and compacting of sediment

Nikau Dix holds a carved waka piece he found in the creek.

Cool Finds

A Fisherman and His Son Noticed Strange Pieces of Wood on a Beach. They Turned Out to Be Fragments of a Polynesian Canoe

The boat, known as a waka, was unearthed in the Chatham Islands. Researchers say it could be one of the most significant discoveries of its kind

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

Greenland sharks can live to be nearly 400 years old.

Greenland Sharks Can Live for 400 Years. Scientists Are Using DNA to Unravel Their Longevity Secrets

These large, mysterious creatures are the longest-living vertebrates on the planet—and their genomes could contain clues to how they prevent cancer and reach such an advanced age

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