You searched for: “zooplankter
zooplankter (s) (noun), zooplankters (pl)
A collective term for the wide variety of microscopic animal organisms that float or drift freely in water because they have little or no ability to determine their own movement: "Zooplankters are found worldwide in both aquatic or marine environments and they represent the basic level of many feeding relationships in the oceans."
This entry is located in the following unit: plankto-, plankt-, -plankton (page 7)