English: high energy littoral rock
Welsh: craig forlan egni uchel 
Subject: Amgylchedd
Welsh definition: Littoral rock includes habitats of bedrock, boulders and cobbles which occur in the intertidal zone (the area of the shore between high and low tides) and the splash zone. Extremely exposed to moderately exposed or tide-swept bedrock and boulder shores.
Notes: Term o system ddosbarthu EUNIS o gynefinoedd morol. LR.HLR. 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 “high energy intertidal rock” yw’r term cyfatebol.