Commission report finds devastating shifts in the Arctic and record-breaking marine heatwaves

October 1, 2026 by The Sting's Team Leave a Comment

Romesa Saqib is a medical student with a strong interest in research and global health. — (Credit: Unsplash)

This article is brought to you in association with the European Commission.

The ocean is changing at an alarming pace with direct consequences for marine life, coastlines and communities all across the world. That is the main conclusion of the tenth report on the state of the ocean, published today by the Marine Environment Monitoring Service of Copernicus, the EU Earth observation programme. The report goes back to data from 1960 and shows that, due to the rising temperatures, the average sea-level increased by about 4.2 mm per year since 2012.

Key findings from this year’s report include:

Devastating shifts for the Arctic: The Arctic, region of growing strategic importance for climate security, economic resilience and geopolitical stability, shows some of the sharpest changes. The report highlights that sea-ice extent fell by roughly 490,000 km² per decade between 1979-2025. That corresponds to the area almost as large as Spain. This loss leads to more wind and waves, which has resulted in around 60% of Arctic coastal infrastructure becoming vulnerable to erosion and sea-level rise.
Regional seas in Europe experience intense temperatures: The Mediterranean and Black Sea experienced record-breaking marine heatwaves with temperatures more than 4.6 degrees above normal in 2024.
Sea communities have become more vulnerable: For Small Island Developing States, 65% of their combined Exclusive Economic Zones have faced accelerating sea-level rise since 1999 due to ocean warming.

Through its Copernicus programme and its Ocean State Report, the EU provides trusted data to monitor the ocean’s health and support measures that protect biodiversity, cut pollution and strengthen resilience against climate change.

The annual Copernicus report provides vital data on how changes in the ocean affect ecosystems, food security, economies, coastal communities and global climate regulation.

For more information

Ocean State Reports | CMEMS

EU Space Programme

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