| Biotic Setting | Planktonic Biota |
| Biotic Group | Zooplankton |
| Biotic Subclass | Protozoan Holoplankton |
| Biotic Group | Foraminiferan Aggregation Radiolarian Aggregation |
| Definition | Water parcels in which single-celled protozoans are the perceived dominant feature. CMECS considers only the larger, visible protozoans that form tests or shells. |