| Biotic Setting | Planktonic Biota |
| Biotic Class | Floating/Suspended Plants and Macroalgae |
| Biotic Subclass | Floating/Suspended Macroalgae |
| Biotic Group | Algal Rafts Algal Particles |
| Definition | Areas dominated by macroalgae species that are floating on the surface or suspended freely in the water column. |