Phytoplankton from the North Sea collected by means of a plankton net.
During spring time diatoms are dominating
| Phytoplankton
The term plankton refers to organisms - mainly microorganisms - that are floating through the water. They may be motile, but they cannot swim against currents in the water column. Planktonic organisms that carry out photosynthesis form the phytoplankton. On a global annual scale the phytoplankton brings about the same primary production as the plants on land.
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Phytoplankton
