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New research reveals that ocean color is changing due to warming waters. Satellite data from 2003-2022 shows polar waters are becoming greener, while equatorial waters are turning bluer. This shift in chlorophyll concentration, a pigment produced by phytoplankton, is linked to warming seas, though further study is needed to exclude other climate factors. The change could disrupt marine food webs and fisheries, particularly impacting low-income nations reliant on fishing.

Prepared by Olivia Bennett and reviewed by editorial team.