Oceans

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

A Bryde’s whale photographed in the Mariana Archipelago

Mysterious 'Mechanical-Sounding' Noise Near the Mariana Trench May Now Have an Explanation

An acoustic survey in 2018 and new analysis with A.I. suggest the sounds are vocalizations from the elusive Bryde’s whale

A team of scientists in the Red Sea captured footage of a big blue octopus hunting with other fish species.

Watch Octopuses Team Up With Fish to Hunt—and Punch Those That Don't Contribute

The collaboration across species reveals a surprising social behavior of octopuses, researchers say

An artist imagines what Globidens alabamaensis would have looked like when present-day Texas was still submerged.

Rare Jaw Fossils Discovered in Texas Shed Light on a 20-Foot-Long Mosasaur

Unearthed last year, the remains could reveal new information on the extinct sea reptile, which crushed mollusks and shelled creatures with its large, round teeth

Fossil teeth are quite abundant in Southwest Florida.

Four Places to Find Fossilized Shark Teeth in the United States

Sharks have been losing teeth for 400 million years. Here’s a guide to uncovering some of these plentiful fossils across the country

Joe Mazraani fans away sand to get a better look at part of Le Lyonnais.

Divers Discover the Long-Lost Wreckage of a Passenger Steamship That Sank in a Hit-and-Run in 1856

"Le Lyonnais" descended into the depths off the coast of Massachusetts after colliding with the "Adriatic," a sailing vessel that left the floundering steamship to fend for itself

Divers saw nine species of game fish and soft coral starting to grow on the submerged cars last month.

No Longer Full of Commuters, Atlanta's Old Subway Cars Are Now Filled With Fish

Two Metropolitan Atlanta Rapid Transit Authority railcars were added to an artificial reef off the coast of Georgia to create more wildlife habitat

This rare leucistic green sea turtle was discovered among nests, supported by local conservation efforts, in Papua New Guinea’s Conflict Islands.

See 15 Stunning Images From the Ocean Photographer of the Year Awards

The winning and highly commended underwater photography spotlights breathtaking animal behavior, conservation needs and the otherworldly environment of Earth's oceans

Japanese eels use burrowing and swimming motions to move around the seafloor—and to escape from inside the stomach of a predator.

Watch Eels Make a Great Escape From a Fish's Stomach After Being Swallowed Alive

For the first time, scientists witnessed Japanese eels free themselves from the stomach of a predatory fish in X-ray video footage

Germany’s North and Baltic Seas are littered with munitions from the First and Second World Wars, such as shells—as shown here—once fired from German battleships.

A Massive Effort Is Underway to Rid the Baltic Sea of Sunken Bombs

The ocean became a dumping ground for weapons after Allied forces defeated the Nazis. Now a team of robots and divers is making the waters safer

Divers observed the HMS Hawke's intact guns at the bottom of the North Sea.

Divers Discover Sunken Warship Torpedoed by Germany in World War I

A German U-boat sank the HMS "Hawke" off the coast of Scotland in the early days of the war

A mother manatee and her calf in Florida's Crystal River amid eelgrass, which is crucial for supporting the large mammals.

See 13 Captivating Images From the Wildlife Photographer of the Year Contest

The highly commended shots provide a preview of the 60th annual competition, which spotlights astounding animal behaviors and the conservation issues they face

The doomed porbeagle shark, just after being tagged and released by researchers in 2020.

Scientists Solve a 'Murder Mystery' After a Pregnant, Tagged Shark Got Eaten

It's rare for apex predators to become prey, but researchers suggest they've documented the first known case of a porbeagle shark getting consumed by another animal

A recent expedition to the Titanic's wreckage found that part of the ship's iconic bow railing has collapsed.

New Photographs Reveal Decay of the Titanic and Collapse of Its Iconic Railing

An expedition this summer documented signs of deterioration on the wreck, but it also rediscovered the Diana of Versailles statue, the centerpiece of the ship’s first-class lounge

A bottlenose dolphin photographed in Honduras shows its teeth.

A Dolphin Keeps Biting People in Japan. Researchers Think It's Just Lonely

A series of dolphin attacks in Wakasa Bay is believed to be the doing of a lone male bottlenose dolphin looking for friends or a mate—but finding only humans

An artist's rendition of the prehistoric sea cow's death.

Fossils Capturing a Sea Cow's Violent End Shed Light on Prehistoric Food Chains

New research suggests the dugong-like sea creature was attacked by a crocodile, then its remains were scavenged by a tiger shark—a rare series of events to be immortalized in the fossil record

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