| Biotic Setting | Planktonic Biota |
| Biotic Group | Zooplankton |
| Biotic Subclass | Echinoderm Meroplankton |
| Biotic Group | Mixed Echinoderm Larval Aggregation |
| Biotic Community | Ophiuroid Larval Aggregation Asteroidean Larval Aggregation Holothurian Larval Aggregation |
| Definition | Water parcels in which these larval forms aggregate and are the dominant form of zooplankton. |