This ~30 TW Southern Ocean heat sink is commonly omitted from ocean and coupled climate models.

Average sea surface temperature outside polar regions was highest on record for July, beating previous high in 2023

Oxygen is disappearing from oceans, lakes, rivers, and coastal waters at an alarming rate, threatening aquatic life and weakening the natural processes that help regulate Earth’s climate. Scientists w...

Research from Lancaster University and University of Texas reveals that invasive rats on tropical islands are reshaping coral reef food webs.

Ocean dynamics extend and intensity marine heatwaves (MHWs) in mid-to-high latitude oceans and the eastern tropical Pacific. In particular, the Atlantic overturning’s predictability makes North Atlant...

Increasing hydrostatic pressure induces the release of dissolved organic matter from rapidly settling marine particles and contributes to the depth attenuation of carbon fluxes.

The United States alone is responsible for roughly half of the world’s ocean monitoring platforms (1). In May, the US government announced plans to decommission and remove more than 900 deep-sea instr...

We can now measure changes in the thousands of different and invisible microbes that contribute to healthy reef communities. In 2012, Nature revealed that humans provide a home to thousands of diffe...

Scientists say what looked like a pause in the early 2020s now appears to have been a temporary slowdown

Plastic-coated fertilizers used on farms are emerging as a major but hidden source of ocean microplastics. A new study found that only a tiny fraction reaches beaches through rivers, while direct drai...

Scientists point to changes that jeopardize the marine mammals’ critical feeding grounds

The full picture of potential consequences of the UK’s marine heatwaves is only just starting to emerge.

Take the EAF-Nansen Programme Taxonomy Survey 2026 to share your perspectives as marine taxonomists in Africa.

The Antarctic ice sheet does not behave as one single tipping element, but as a set of interacting basins with different critical thresholds. This is the finding of a new study by the Potsdam Institut...

Ocean Fronts: Crucial Architects of Marine Ecosystems and Global Carbon Dynamics Our oceans, vast and enigmatic, are hosts to dynamic features that orchestrate the health of marine ecosystems and the

“It’s scary. It’s extreme. I think we’re on track to be hotter than 2023.”

Polymetallic nodules of the abyssal seafloor are considered potential resources of nickel, cobalt, copper, as well as rare earth elements. The Clarion-Clippe...

A new study finds coral reef decline driven by climate change could cost Hawaiʻi residents between $1.8 billion and $3 billion in lost reef-related activities

npj Climate Action - Systemic approaches for the protection of our oceans and marine environments

Mangroves are globally important blue-carbon ecosystems, yet their resilience is threatened by extreme weather events and hydrological alterations. In southe...

Despite being a critical global issue, the role of microplastics (MPs) in climate change has received limited attention. Climate disruption and plasti…

In 2025, the EU exported 2.7 thousand tonnes of shark fins to countries outside the EU, worth €44.8 million. Compared with 2024, the export volume decreased by 15.2% (from 3.1 thousand tonnes), and th...

El Niño is officially underway - and could develop into one of the strongest on record.

Researchers develop an early-warning tool that predicts coral bleaching five to six months in advance by tracking climate patterns.

Sea ice loss seems to have triggered a decline in the nutrient nitrate, affecting the tiny organisms that form the foundations of marine food chains and absorb atmospheric carbon dioxide, according to...

Implementing Part II of the Biodiversity Beyond National Jurisdiction (BBNJ) Agreement is an opportunity to transform the global approach to access and benef...

A study carried out by scientists from Ifremer, IRD, the universities of Western Brittany (UBO) and Bordeaux, CNRS, and the University of Tartu (Estonia) reveals the impact of nickel mining on the coa...

Today, the European Commission adopted OceanEye to expand the EU\'s role in ocean observation.

The fate of the Atlantic Ocean current that keeps Europe’s climate warm depends on our carbon emissions and the rate of ice melt from Greenland, but there is a chance that a shutdown is already inevit...

Lord Howe Island lies in the middle of the ocean, about 700 kilometers northeast of Sydney. It's covered in lush forest and fringed by the world's most southerly coral reef ecosystem.

The tuna in your sandwich was likely caught with the aid of drifting rafts called fish aggregating devices (FAD). New Canadian research finds that abandoned FADs are smashing into coral reefs and enda...

Scientists have identified nearly 166,000 sq km (64,000 sq miles) of coral reefs that are capable of surviving ​and recovering from climate change, three times more than previously estimated, ‌researc...

For the first time in 25 years, a giant squid has been detected in Western Australian waters - one of 226 species uncovered in eDNA survey.

The system of ocean current that moves heat in the Atlantic Ocean plays a key role in regulating climate. Today’s monitoring of it may be discontinued

Mission to Canada’s Queen Elizabeth Islands reveals degradation of a sea ice haven

Whale falls form when whale carcasses sink to the seafloor, creating localized concentrations of biodiversity in the deep ocean. Besides playing a role in long-term carbon sequestration, whale falls h...