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Plankton - Wikipedia
Plankton | Definition, Characteristics, Types, Diet, Size, & Facts
Plankton - National Geographic Society
What are plankton? - NOAA's National Ocean Service
Plankton, explained - National Geographic
What Is Plankton? Definition and Examples - Science Notes and …
Plankton: Small Organisms with a Big Role in the Ocean
Ocean Science: The power of plankton | Nature
See the microscopic world of plankton in stunning detail
Phytoplankton - Wikipedia