You searched for: “ultraplanktons
ultraplankton (s) (noun), ultraplanktons (pl)
Another term for nanoplankton which are very tiny plankton: Ultraplankton, also termed picoplankton, are so minute that they can pass through a fine mesh net because they are only 2 to 20 micrometers in size.
This entry is located in the following units: plankto-, plankt-, -plankton (page 7) ultra-, ult- (page 4)