Plankton
Plankton are the diverse collection of organisms that drift in water but are unable to actively propel themselves against currents. The individual organisms constituting plankton are called plankters. Wikipedia
People also ask
Is plankton a plant or animal?
What is in plankton?
What does plankton eat?
Does plankton swim or float?
Plankton. Planktonic organisms include protists (allegedly simple, unicellular, or colony-forming algal primary producers and their protozoan consumers), ...
the passively floating or weakly swimming usually minute organisms (such as dinoflagellates, diatoms, copepods, radiolarians, and larval crustaceans and ...