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‘Ticking time bomb’: Ocean acidity crosses vital threshold, study finds
- Researchers affiliated with NOAA, Oregon State University, and Plymouth Marine Laboratory reported in a 2025 publication that by 2020, global ocean acidity had surpassed a critical threshold.
- The study builds on previous warnings that six planetary boundaries had already been crossed and ocean acidification signals growing risk for marine habitats.
- The research revealed up to 60% of the subsurface ocean is affected, with polar regions experiencing the largest surface changes, threatening coral reefs and shellfish industries.
- The study indicates that these environmental factors lead to a substantial loss of suitable habitats, with coral reefs experiencing a 43% decrease and polar pteropods facing reductions of up to 61%.
- The outcomes highlighted at the ongoing UN Ocean Conference emphasize urgent global commitments to stem ocean acidification and protect marine ecosystems and economies.
71 Articles
71 Articles
VIDEO. Researcher at the CNRS and co-president of the One Ocean Science Congress, Jean-Pierre Gattuso assures that marine organisms are threats.
Is a monster web of ocean currents headed for collapse? The race is on to find out
Research ships rarely brave the Greenland Sea in winter. Early this year, scientists ventured into the ice-covered waters to capture crucial data about the planet’s future. Research ships rarely brave the Greenland Sea in winter. Early this year, scientists ventured into the ice-covered waters to capture crucial data about the planet’s future.
Ocean Acidity Has Reached Critical Levels, And We're All Under Threat
Ocean acidity is one of the key markers of Earth's health, because if it tips too far towards acidic then the results can be catastrophic – and a new study suggests the world's waters are now entering this danger zone.
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