| Psammon communities have received very little attention compared to lower littoral and sublittoral meiobenthos, and psammon has been rarely treated as a single entity. |
| The psammon here means the hygrophilous fauna of the moist sand in supralittoral and above the coastal groundwater. |
| Rotifers also are present in the psammon, the sandy habitat along the wet reaches of shorelines. |
| A total of 156 non-overlapping taxa belonging to 12 phyla were found in the Estonian psammon communities, 69 taxa occurring in the Gulf of Finland and 123 taxa in lakes. |
