Almost all marine life depends on phytoplankton, tiny plant-like organisms that use chlorophyll to photosynthesize. Scientists track phytoplankton by measuring the concentration of chlorophyll in the water, which @nasa satellites can detect from space.
https://go.nasa.gov/3Y1sfk4
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https://go.nasa.gov/3Y1sfk4
#NASAEarth
Breathing Life into the Ocean
Almost all life in the ocean depends on tiny photosynthetic organisms known as phytoplankton.go.nasa.gov