| Biotic Setting | Planktonic Biota |
| Biotic Class | Floating/Suspended Plants and Macroalgae |
| Biotic Subclass | Floating/Suspended Macroalgae |
| Biotic Group | Algal Particles |
| Biotic Community | Gracilaria Particles Kelp Particles Rockweed Particles Sargassum Particles Ulva Particles |
| Definition | Areas dominated by live drifting or floating macroalgae, or macroalgal pieces. They do not form rafts, but their distribution in the water column is at a density that can be clearly observed with the human eye. |