Oceans

Antler coral can host different types of algae, sometimes resulting in differences in color. 

This Pacific Coral Can Withstand Warming Waters With the Help of Algae

The heat-resistant organism in antler coral may help it adapt as ocean temperatures increase

Phytoplankton form swirls of green in the Barents Sea north of Norway. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite acquired this image on July 27, 2004.

Climate Change Is Shifting the Color of Earth's Oceans

More than half of our oceans have taken on a greener hue in the past 20 years, a trend that cannot be fully explained by natural variation, per a new study

Experts aren't sure why the otter is approaching surfers, as sea otters have a natural fear of humans.

A Surfboard-Snatching Sea Otter Is Vexing Wildlife Officials in California

While the animal's antics may look cute, the dangerous behavior could bring harm to humans or force authorities to euthanize the endangered mammal

An orca hunts sea lion pups on a beach in Argentina.

Five Astounding Orca Behaviors Explained, From Ramming Boats to Hunting Great White Sharks

The apex predators also surge onto shorelines to capture seals and engage in mysterious greeting ceremonies

Sightseers spotted the rarely seen creatures on a Monterey Bay Whale Watch boat tour off the coast of California.

Tourists Spot 'Incredibly Rare' Whales Off California Coast

Cuvier's beaked whales can hold their breath for hours and don't spend much time at the surface, making them mysterious—and a treat to see

An artist's interpretation of what Wilson's little penguins would have looked like

New Extinct Species of 'Ridiculously Cute,' Tiny Penguins Discovered in New Zealand

Scientists identified the diminutive birds after finding two of their fossilized skulls

The company has chosen the MV Lara for the 36-month journey.

Would You Spend Three Years Living on a Cruise Ship?

Some enthusiasts are selling their homes in preparation, while others have balked at the risks

Icon of the Seas successfully passed an initial round of sea trials.

The World's Largest Cruise Ship Is Nearly 1,200 Feet Long

Scheduled to debut in January, the vessel can accommodate 5,600 guests and 2,350 crew members

Crews carefully lowered the bottles to a depth of 111 feet below the surface.

1,700 Bottles of Sparkling Wine Spent Six Months Beneath the Waters of the Norwegian Sea

The stash was submerged some 111 feet deep in temperatures as cold as 41 degrees Fahrenheit

Brooding octopuses at a previously unexplored site in the Pacific Ocean, off the western coast of Costa Rica

Scientists Find Rare Deep-Sea Octopus Nurseries

The team captured footage of the eight-armed creatures brooding their eggs in groups near Costa Rica

Australian spotted jellyfish typically reach up to 18 to 20 inches in diameter.

Invasive Australian Spotted Jellyfish Washes Up on Texas Beach

The prolific jellies can form huge swarms and clear zooplankton from wide areas of water, sending ripple effects up the food chain

Plastics typically contain chemical additives like metals and dyes, which can leach out and affect organisms nearby.

Microplastic Exposure Makes Microbes More Virulent

Laboratory research shows that someway, somehow, PVC plastic breeds antimicrobial resistance

The massive sharks known as megalodons ruled the oceans for some 20 million years.

Megalodons Were Warm-Blooded—and It Was a Blessing and a Curse

The giant sharks likely warmed some of their body parts, helping them grow massive but leaving them vulnerable to environmental changes, a new study finds

A recent incident suggests the boat-bashing behavior of orcas in the Strait of Gibraltar might be spreading to other groups.

Orca Rams Into Yacht Near Scotland, Suggesting the Behavior May Be Spreading

The incident occurred roughly 2,000 miles away from the recent encounters near Spain and Portugal

Analyzing DNA found in the water off Greenland, researchers have found the signs of species on the move.

The Atlantification of the Arctic Ocean is Underway

The discovery of a tiny fish far from its normal range is a poignant reminder of the changes that are already happening

The Titan submersible. The five people aboard may run out of oxygen on Thursday morning Eastern time.

Crew of Missing Titanic Tourist Submersible Believed to Be Dead

Debris found near the historic shipwreck suggests the Titan experienced a "catastrophic implosion"

Algae collected by the artist while free diving off Point La Jolla, California

Stunning Seaweed Prints Capture Life Underwater

Free diver Oriana Poindexter creates cyanotypes of kelp collected off the California coast

Blacktip reef sharks are one of five common species of reef sharks that are disappearing.

Reef Sharks Are Disappearing Around the World

A massive new study found a staggering decline of these top predators, which help balance vulnerable coral reef ecosystems and their food chains

Enceladus spews material from its ocean into space, which spacecraft from Earth can study to learn more about what lies below.

Scientists Find Phosphorus—a Key Element for Life—on a Saturn Moon

This is the last of six essential elements for life to be detected on Enceladus, giving the strongest indication yet that its ocean is habitable

Thousands of dead fish—most of them Gulf menhaden—washed up on the beaches of Brazoria County in Texas.

Why Thousands of Dead Fish Washed Ashore in Texas

Conditions created a "perfect storm" that robbed the water of dissolved oxygen near the coast

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