Indian Ocean

Hammerhead sharks have are considered critically endangered.

More Than a Third of Shark Species Are Now Threatened With Extinction

Overfishing, habitat loss and climate change are behind the 'desperate' decline

There are many reasons to be worried about the state of the world’s oceans. But some scientists say it’s important to point to successes, in order to motivate people to take further, evidence-based action.

Seven Reasons to Be Optimistic About the World's Oceans

The health of the ocean is under threat, but these good-news stories deserve attention too

This image from Seabed 2030 shows how much of the seafloor has been mapped, with black areas representing places without data yet.

Innovation for Good

Can Scientists Map the Entire Seafloor by 2030?

Two non-profit organizations are betting that with the help of research institutions, private vessels and new technologies, they can do just that

A pygmy blue whale (Balaenoptera musculus brevicauda) crosses the Indian Ocean and passes near Mirissa, Sri Lanka.

Using Nuclear Bomb Detectors, Scientists Overhear the Secret Songs of a Never-Before-Seen Pygmy Blue Whale Population

The new group is named 'Chagos' after the islands close to where the melodies were detected

The Southern Ocean is defined by a swift undertow called the Antarctic Circumpolar Current (ACC) that flows from West to East around Antarctica.

National Geographic Officially Recognizes the Southern Ocean as World's Fifth Ocean

The organization's cartographers will now label a total of five oceans on their maps and atlases

Individuals located in the Comoros Islands may have descended from the coelacanth population in Madagascar.

Madagascar May Be Stronghold for Ancient Fish With 420-Million-Year History

Fishermen from the island nation caught a number of rare coelacanths off the coast using gillnets

An oceanic whitetip shark swimming in the open ocean. This species was common in the 1970s but its population has since declined by 98 percent, according to a new study.

New Research

Oceanic Sharks and Rays Have Declined 70% Since 1970

Fishing fleets have indiscriminately slaughtered sharks for decades and a new study catalogues the environmental damage done

The group’s identification also highlights how much of ocean life—even when it comes to the largest sea creatures—has yet to be discovered.

Scientists Eavesdrop on New Population of Blue Whales Singing in the Indian Ocean

Scientists have identified a previously unknown blue whale song, suggesting that a distinct population had long gone undetected

The Schmidt Ocean Institute’s submersible SuBastian, which was responsible for several discoveries in 2020, is retrieved from the water.

The Top Ten Ocean Stories of 2020

From the discovery of a giant coral reef pinnacle to a shocking estimate of plastics on the seafloor, these were the biggest marine moments of the year

Indian fishermen row their boat on the Bay of Bengal.

New Research

Undersea Earthquakes May Help Us Take the Ocean’s Temperature

The technique could allow for more accurate and comprehensive monitoring of the world’s warming oceans and track climate change

Alvin, a remotely operated submersible, drills for samples of the deep sea floor in 2014.

Deep-Sea Microbes Exert the Least Amount of Energy Possible to Survive

Giving a whole new meaning to doing the “bare minimum”

A deep-sea starfish attached to what is called a polymetallic nodule. These nodules are being targeted by the burgeoning deep-sea mining industry for their mixture of valuable metals including manganese, cobalt, copper and nickel.

Deep-Sea Mining’s Environmental Toll Could Last Decades

A study of microbial communities at the site of a 1989 deep-sea mining test suggests the fragile ecosystem may take half a century to fully recover

This siphonophore may be the longest ever recorded.

Watch This Giant, Eerie, String-Like Sea Creature Hunt for Food in the Indian Ocean

Researchers shared a video of this massive siphonophore, one of the longest of its kind ever recorded

A rock samples collected during a 2010 drilling expedition in the South Pacific that found microbes in the sea floor.

Microbes Living in Deep Sea Rocks Spawn More Hope for Life on Mars

Starved of resources, these hardy bacteria still eke out a living, suggesting life forms could survive in the harsh habitats on other planets

Grey seals will clap their forelimbs together underwater, generating a sharp sound that communicates to others around them.

In a First, Scientists Film Wild Grey Seals Clapping to Show Their Strength

The behavior is believed to scare off competitors while wooing potential mates

Thousands of brooding octopuses were discovered in 2018 on the ocean floor off the coast of California.

Eighteen Things We've Learned About the Oceans in the Last Decade

In the past 10 years, the world's oceans have faced new challenges, revealed new wonders, and provided a roadmap for future conservation

A two-month-old filefish collected in the survey surrounded by plastic bits.

New Research

Newly Identified Fish Nurseries Are Choked With Plastic

Larval fish congregate in surface slicks, which contain plankton—and 126 times more plastic than surrounding waters

Cool Finds

These Newly Discovered Shrimp Call a Whale Shark's Mouth Home

Found in a whale shark off Okinawa, hundred of amphipods were living it up in the giant fish's gills

Victor Vescovo piloting his sub, Limiting Factor.

Trending Today

American Becomes First to Visit the Five Deepest Spots in World's Oceans

Victor Vescovo recently concluded his Five Deeps Expedition, piloting a custom-built submarine to the deepest trenches on Earth

Researchers often depend on fishing communities to learn what life is like for sharks out in the deep ocean.

To Study Rare Sharks, Scientists Are Heading to Fish Markets

Marine biologists are combing fish markets around the world to study what comes up in the nets, and sometimes the catch is full of surprises

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