Phytoplankton blooms draw atmospheric carbon into ocean food webs
Microscopic algae fix carbon dioxide through photosynthesis across the sunlit ocean, rivaling terrestrial plants as a planetary carbon sink when blooms peak.
Grazers and sinking fecal pellets and dead cells export some of that carbon into deeper water, where it may stay sequestered for decades to centuries.
The ocean breathes with green dust. Phytoplankton are the quiet pumps linking air, sunlight, and the long memory of the deep.
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