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21% of Oceans Darken, Threatening Marine Life and Ecosystems

5/27/2025

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Summary

Story summary

A staggering 21% of the world's oceans have darkened between 2003 and 2022, threatening marine ecosystems. This alarming shift shrinks photic zones—crucial for marine life—by as much as 100 meters in certain areas. Experts caution that this could unravel food webs, alter species distribution, and jeopardize the ocean's climate-regulating functions, especially in coastal regions.

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Story summary

A staggering 21% of the world's oceans have darkened between 2003 and 2022, threatening marine ecosystems. This alarming shift shrinks photic zones—crucial for marine life—by as much as 100 meters in certain areas. Experts caution that this could unravel food webs, alter species distribution, and jeopardize the ocean's climate-regulating functions, especially in coastal regions.