You searched for: “mesoplankton
1. The plankton living between about a hundred fathoms from the bottom and a hundred from the surface or between epiplankton and bathyplankton; alternatively, all plankton below the epiplankton level.
2. A classification of plankton of intermediate body size, between macroplanktons (large planktons) and microplanktons (very-small planktons).
This entry is located in the following units: meso-, mes-, mesi- (page 7) plankto-, plankt-, -plankton (page 3)