| Biotic Setting | Planktonic Biota |
| Biotic Class | Phytoplankton |
| Biotic Subclass | Chlorophyte Phytoplankton |
| Biotic Group | Chlorophyte Aggregation Chlorophyte Bloom Chlorophyte Maximum Layer |
| Definition | Areas dominated by Chlorophytes (green algae that are unicellular, flagellated, and sometimes colonial phytoplankton), occurring more predominantly in the tropics. |