It is estimated that nearly 50-80% oxygen production occurs by oceans. It is mainly done by oceanic planktons, drifting plants, algae, etc.
What are phytoplankton?
These are marine algae which are photosynthetic.
They provide food for a diverse range of sea creatures in a healthy ecosystem.
Phytoplankton, also known as microalgae, are algae that, like terrestrial plants, contain chlorophyll and require sunlight to live and grow.
Thus, it can be concluded that nearly 50-80% of oxygen develops through photosynthesis from oceans exhibited by phytoplankton, drifting plants, etc.
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