Ocean warming News

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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
A mariscadora uses a clam rake to dredge for shellfish off Cambados in Galicia. Image by Naomi Mihara for Mongabay

In northern Spain, climate change is killing shellfish — and women’s livelihoods

Naomi Mihara, Natalie Donback 29 Jun 2024

Indigenous Alaskans drive research in a melting arctic

Gabe Allen 4 Jun 2024
Alson Kelen on a U.S. airstrip runway. Image by Mark Klett/Cape Farewell.

Marshallese worries span decades — first nuclear tests, now sea-level rise

Amélie David 29 May 2024
A multilayered lenticular cloud hovers near Mount Discovery, a volcano about 70 km (44 mi) southwest of McMurdo Station in Antarctica.

Polar warning: Warming temperatures mean more than melted ice

Elizabeth Devitt 27 May 2024
Two polar bear siblings play-fighting in the wild on Barter Island, Alaska.

Report ranks 60+ ideas, including geoengineering, to save the Arctic

Jeremy Hance 21 May 2024

‘Our life support system is at risk’: Interview with ‘Her Deepness’ Sylvia Earle

Elizabeth Claire Alberts 3 May 2024
A visual reconstruction of the February 19, 2023 incident in which a Hong Kong-flagged cargo vessel reportedly hit the Indian fishing boat, Ruby, 450 nautical miles away from Kanyakumari, the southernmost tip of India.

Warming seas push India’s fishers into distant, and more dangerous, waters

Imran Muzaffar and Aliya Bashir 23 Apr 2024
A whale shark in Ningaloo Reef, Western Australia.

Annual ocean conference raises $11.3b in pledges for marine conservation

Elizabeth Claire Alberts 19 Apr 2024
Guna homes on the coastline of Gardi Sugdub Island.

Panama delays promised relocation of sinking island community

Aimee Gabay 17 Apr 2024
Fluorescing and bleached reef in New Caledonia in 2016.

Global coral bleaching now underway looks set to be largest on record

Elizabeth Claire Alberts 16 Apr 2024

‘Corals dying’ as yet more bleaching hits heat-stressed Great Barrier Reef

Elizabeth Claire Alberts 5 Mar 2024
Walruses east of Svalbard in the Barents Sea.

The new Arctic: Amid record heat, ecosystems morph and wildlife struggle

Sharon Guynup 14 Feb 2024
A lemon shark in the mangroves in the Bahamas.

Ocean heating breaks record, again, with disastrous outcomes for the planet

Elizabeth Claire Alberts 30 Jan 2024

Hotter seas lead to coral bleaching along Colombia’s coast, 2023 expeditions find

Antonio José Paz Cardona 25 Jan 2024
Jasmine is commonly used to flavor tea and as an offering in devotional ceremonies.

Java’s crumbling coastline and rising tide swamp jasmine flower trade

Moh. Tamimi 24 Jan 2024

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