English: mudflats and sandflats not covered by seawater at low tide
Welsh: gwastadeddau llaid a gwastadeddau tywod nad ydynt o dan ddŵr môr adeg llanw isel
Subject: Amgylchedd
English definition: EU Habitats Directive Annex 1 Habitat
Welsh definition: Cynefin Atodiad 1 y Gyfarwyddeb Cynefinoedd