File:Prochlorococcus blue-green.tiny ones.png

"A single kind of blue-green algae produces the oxygen in one of every five breaths we take"...

"The World Is Blue: How Our Fate and the Ocean’s Are One"

--- Sylvia Earle / National Geographic

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• Prochlorococcus

"The Tiny Little Ones - Plankton"

"Ecosystems of the Sea"

It is estimated that marine plants produce over 50 percent of the oxygen in the atmosphere'

Nearly all marine plants are single celled, photosynthetic plankton-algae

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