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Record heat
In 2025, the oceans absorbed enormous amounts of heat again. Over 90% of the heat stored by CO₂ ends up in the sea – a clear sign of the climate crisis.

 

Consequences
Warmer oceans intensify storms, heavy rainfall, and flooding, cause marine heatwaves, and accelerate sea level rise.

 

Long-term trend
Measurements show: The oceans are as hot as they haven't been for at least 1,000 years and are warming faster than ever before.

 

Conclusion
Global warming is ocean warming – only decreasing emissions can stop this trend.