psammon

psammo- +‎ -on, to be analogous to plankton.

• IPA^(key): /ˈsæmən/

psammon (uncountable)

1. (ecology) The community of organisms living in the sandy, moist habitat along a shoreline.
   • 2014, James H. Thorp, D. Christopher Rogers, Thorp and Covich's Freshwater Invertebrates: Ecology and General Biology:

     Rotifers also are present in the psammon, the sandy habitat along the wet reaches of shorelines.

• endopsammon
• epipsammon
• mesopsammon

• psammobiotic
• psammophilous