You searched for: “euplankton
euplankton (s) (noun), euplanktons (pl)
An organism that moves or floats freely in the open water: John found out about euplankton in his biology book which said that these living forms drift easily on the surface of open waters and are different to the tychoplankton that exist in the depths of the oceans.
This entry is located in the following unit: plankto-, plankt-, -plankton (page 2)