Plankton (from the Greek planktos, meaning "drifter" or "wanderer") are organisms that drift in water (or air) but are unable to actively propel themselves against currents (or wind). Marine plankton include drifting organisms that inhabit the saltwater of oceans and the brackish waters of estuaries.
Plankton (from the Greek planktos, meaning "drifter" or "wanderer") are organisms that drift in water (or air) but are unable to actively propel themselves against currents (or wind). Marine plankton include drifting organisms that inhabit the saltwater of oceans and the brackish waters of estuaries.
Source: Wikipedia "Plankton" · CC BY-SA 4.0
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