| Biotic Setting | Planktonic Biota |
| Biotic Group | Zooplankton |
| Biotic Subclass | Molluscan Meroplankton |
| Biotic Group | Veliger Aggregation |
| Biotic Community | Bivalve Veliger Aggregation Gastropod Veliger Aggregation |
| Definition | Water parcels in which veligers or pedi-veligers (the distinctive larvae of many mollusks) are the dominant form of zooplankton. Veligers are characterized by ciliated lobes attached to a formative shell and body. |