{"id":1044,"date":"2026-06-09T10:32:26","date_gmt":"2026-06-09T10:32:26","guid":{"rendered":"https:\/\/california-relocation-journal.com\/?p=1044"},"modified":"2026-06-09T10:32:26","modified_gmt":"2026-06-09T10:32:26","slug":"climate-change-pollution-push-oceans-to-tipping-point-u-n-report-says","status":"publish","type":"post","link":"https:\/\/california-relocation-journal.com\/?p=1044","title":{"rendered":"Climate change, pollution push oceans to tipping point, U.N. report says"},"content":{"rendered":"
\n

A new United Nations assessment of ocean health documents a \u201cdeepening crisis\u201d as climate change, pollution, overfishing and biodiversity loss threaten marine ecosystems crucial to human survival. <\/p>\n

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The result is rising sea levels, acidifying seas, dying coral reefs and declining fish stocks that supply 20% of the animal protein humans consume, according to the report released Monday and compiled by 600 scientists from 86 nations. It\u2019s the third World Ocean Assessment since 2015 and was last updated in 2021. <\/p>\n

\u201cThe coming decade is decisive: without rapid, coordinated global action, ocean health will continue to decline, threatening climate stability, biodiversity resilience, food security, livelihoods and the well-being of billions,\u201d Ian Butler, a lead author of the assessment and a marine ecologist with the Australian government, said in an email. <\/p>\n

The assessment estimated that up to 45% of global economic activity takes place on the world\u2019s coasts and that 3 billion people live within 62 miles of the ocean. <\/p>\n

\u201cContamination and pollution, such as plastic waste, agricultural run-off, sewage and chemicals, are major contributors to the decline in ocean health,\u201d the 1,352-page report said. Those pollutants, meanwhile, are accumulating in marine organisms, their effect magnified up the food chain to animals eaten by people. <\/p>\n

About 38% of global fish stocks in 2021 were being harvested faster than populations could replenish themselves, up from 35% two years earlier, according to the latest available data. <\/p>\n

Adding to the stress on fisheries are the impacts from climate change, which are decimating coral reefs that provide habitat for 25% of marine life. One-sixth of ocean heat absorption over the last 70 years occurred just between 2018 and 2023, according to the assessment. Higher sea surface temperatures have spawned more destructive hurricanes and tropical cyclones and prompted some marine species to migrate to cooler waters, disrupting local fisheries. <\/p>\n

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The scientists said the rapid warming of oceans is also responsible for 30% to 50% of sea level rise, endangering coastal communities. As water heats up, its volume expands. Between 2013 and 2023, global sea level rise was 4.3 millimeters annually, compared with 2.1mm per year from 1993 to 2002. <\/p>\n

Although the pandemic temporarily reduced stress on oceans as economic activity slowed, the industrialization of marine ecosystems continues, the researchers said, with planned deep sea mining operations posing potential risks to seabed ecosystems.<\/p>\n

Although the assessment was wide-ranging, the researchers acknowledged that much remains unknown about the ocean, noting that only 27% of the global seabed has been mapped. The report is being released as the Trump administration moves to dismantle the world\u2019s most extensive network of ocean sensors and observation platforms. <\/p>\n

\u201cLittle of the vulnerability of marine biodiversity, species genetics and microbial communities, particularly in the deep sea, to climate change and emerging economic activities is understood,\u201d the report states. <\/p>\n

Still, Butler said there was reason for optimism, noting the ratification of the U.N. high seas biodiversity treaty last year that allows for the creation of marine protected areas in international waters. <\/p>\n

\u201cI believe with urgent, coordinated global action we still can restore its health to secure a healthy, biodiverse ocean which would benefit all life on Earth,\u201d he said. <\/p>\n

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Woody writes for Bloomberg. <\/i><\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

Without rapid, coordinated global action, ocean health will continue to decline, threatening climate stability, biodiversity resilience, food security, livelihoods and the well-being of billions, the author of a new U.N. report says.<\/p>\n","protected":false},"author":1,"featured_media":1043,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1044","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climate"],"yoast_head":"\nClimate change, pollution push oceans to tipping point, U.N. report says - California Relocation Journal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/california-relocation-journal.com\/?p=1044\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Climate change, pollution push oceans to tipping point, U.N. report says - 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