Ocean warming News

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Nontoxic dye released from an artificial upwelling experiment off the Canary Islands. That experiment, set to last weeks, ended after just one day when the pump failed. “To most of us that proved … the technical readiness of this approach is not there,” says Michael Sswat, a postdoctoral researcher at GEOMAR Helmholtz Centre for Ocean Research, who was part of the research team.

Marine artificial upwelling, problematic climate solution slow to advance

Sean Mowbray 2 Jun 2025

Scientists underestimate frequency of South Atlantic heating events: Study

Bobby Bascomb 16 May 2025

A Honduran reef stumps conservationists with its unlikely resilience

Fritz Pinnow 2 May 2025

Scientists warn coral restoration can’t keep pace with global reef collapse

Elizabeth Fitt 29 Apr 2025
Coral bleaching in Ningaloo, Australia, in February 2025. Image courtesy of Daniel Nicholson/Ocean Image Bank.

Ongoing global coral bleaching event affects 84% of world’s reefs

Shanna Hanbury 23 Apr 2025
Two North Atlantic right whales photographed in the Bahamas. Image courtesy of Jero Prieto/Pelagic Life.

Critically endangered right whales spotted in the Bahamas for first time

Shanna Hanbury 21 Apr 2025
Women in Timbul Seloko village, Central Java, help with the permeable dam project.

In an ancient Javanese sultanate, coastal women battle climate fallout

Irfan Maulana 16 Apr 2025
Maoz Fine and Naama-Rose Kochman visit the lab’s coral nursery and monitoring station near Eilat.

Even the Gulf of Aqaba’s ‘supercorals’ bleached during 2024 heat wave

Ilan Ben Zion 14 Apr 2025

Corals recover faster on artificial structures than on natural reefs, study finds

Bobby Bascomb 11 Apr 2025
An Uggubseni resident.

In Panama, Indigenous Guna prepare for climate exodus from a second island home

Euan Wallace 10 Apr 2025
Banner image of Pasir Timbul in Raja Ampat, Indonesia, by Rhett A. Butler/Mongabay.

122 companies responsible for a third of present day sea-level rise: Study

Kristine Sabillo 8 Apr 2025
Banner image of a humpback whale breaching in Iceland, by Giles Laurent via Wikimedia Commons (CC BY-SA 4.0).

Study delves into increase in humpback whale sightings in UK and Ireland

Kristine Sabillo 4 Apr 2025
A fisherman repairs his boat on a beach in Soomar Goth, Karachi.

In Pakistan, sea level rise & displacement follow fisherfolk wherever they go

Waqas Alam Angaria 28 Mar 2025
Polar bear mother with two cubs on a snowy sandbank in northern Alaska.

Polar sea ice continues steep decline; but will a troubled world notice?

Elizabeth Devitt 27 Mar 2025
A ceremonial glacier graveyard in Iceland.

With climate change, cryosphere melt scales up as a threat to planetary health

Sean Mowbray 21 Mar 2025
Banner image of damaged causeway after Cyclone Alfred, by Aliceinthealice via Wikimedia Commons (CC0).

Australia faces inflation, agriculture losses after Cyclone Alfred

Kristine Sabillo 18 Mar 2025
A new species of critically endangered guitar shark was identified off the coast of Tanzania. Image courtesy of The Nippon Foundation-Nekton Ocean Census/Sergey Bogorodsky.

Scientists identify more than 800 new species in global Ocean Census

Shanna Hanbury 11 Mar 2025

January 2025 was warmest on record as climate change ‘overwhelms’ La Niña’s cooling

Shanna Hanbury 6 Feb 2025
A moray eel in the coral reefs of the Daymaniyat Islands, Oman.

2024’s top ocean news stories (commentary)

Alfredo Giron, Ana K. Spalding, Andrés Cisneros-Montemayor, Asha de Vos, Cinda P. Scott, Josheena Naggea, Juan José Alava, Olivia Milloway, Rita Maria el Zaghloul 8 Jan 2025

Climate change fueled record extreme weather events in 2024

Shreya Dasgupta 6 Jan 2025
The world’s oceans naturally absorb vast amounts of atmospheric carbon dioxide.

Electrochemical removal of ocean CO2 offers potential — and concerns

Sean Mowbray 20 Dec 2024
Banner image of Galaxea astreata coral colony in Nusa Penida in Bali, Indonesia, courtesy of Ocean Gardener.

Scientists in Bali find what could be the world’s largest coral colony

Kristine Sabillo 17 Dec 2024
Banner image of clownfish and coral reef in Indonesia, by Rhett A. Butler/Mongabay.

44% of reef-building coral species at risk of extinction: IUCN

Kristine Sabillo 14 Nov 2024

NOAA finds 77% of world’s corals exposed to bleaching-level heat

Bobby Bascomb 6 Nov 2024

UN falls short on coral funding as reefs face largest bleaching event on record

Shanna Hanbury 1 Nov 2024

In Mexico, scientists race to save Marietas Islands’ corals from ocean warming

Agustín del Castillo 30 Sep 2024
A group of chinstrap penguins on pack ice on Seal Island in Antarctica.

Arctic sea ice hits summer minimum; Antarctic hovers at new winter lows

Elizabeth Devitt 24 Sep 2024
A jellyfish swims in the sun in the mangroves.

Inaugural Planetary Health Check finds ocean acidification on the brink

Sean Mowbray 23 Sep 2024
Marcel König and Natascha Oppelt (both from the University of Kiel, Germany) measuring melt pond optical properties during RV Polarstern campaign PASCAL, north of Svalbard in June 2017.

Arctic melt ponds influence sea ice extent each summer — but how much?

Michael C. Bradbury 20 Aug 2024
A sea turtle in Ningaloo Reef, Australia.

As waterbodies lose oxygen, are we breaching a potential planetary boundary?

Elizabeth Claire Alberts, Glenn Scherer 13 Aug 2024

Sylvia Earle on the greatest threat to our oceans

Romi Castagnino 9 Aug 2024
An ice shelf and the sea in Greenland.

High-resolution maps reveal surprises about how ice shelves melt

Abhishyant Kidangoor 7 Aug 2024

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