English: littoral sand
Welsh: tywod morlannol
Subject: Amgylchedd
Welsh definition: Littoral sediment includes habitats of shingle (mobile cobbles and pebbles), gravel, sand and mud or any combination of these which occur in the intertidal zone. Shores comprising clean sands (coarse, medium or fine-grained) and muddy sands with up to 25% silt and clay fraction.
Notes: Term o system ddosbarthu EUNIS o gynefinoedd morol. LS.LSa. yw’r Cod Cynefin. Mae’r Cyd-bwyllgor Cadwraeth Natur yn defnyddio system arall o gategoreiddio cynefinoedd morol, yn seiliedig ar system ddosbarthu EUNIS. Yn y drefn honno “intertidal sand” yw’r term cyfatebol.