Original Record Source.
View the original record authored by ‘Source Author’ at ‘NOAA Ocean Facts’ via recovered Helion Archive database link:
https://oceanservice.noaa.gov/facts/ocean-oxygen.html
How much oxygen comes from the ocean?
Scientists estimate that 50-80% of the oxygen production on Earth comes from the ocean. The majority of this production is from oceanic plankton — drifting plants, algae, and some bacteria that can photosynthesize. One particular species, Prochlorococcus, is the smallest photosynthetic organism on Earth. But this little bacteria produces up to 20% of the oxygen in our entire biosphere. That’s a higher percentage than all of the tropical rainforests on land combined.
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