First render of this was posted on ashundar with the tide all the way in. I used the sand dune shader i created some time ago and blended it in up to the waves. It stops there, else there will be no water.
Rough rocks were created using a surface layer with a powerfractal as a child and slope and altitude constraints as well as scaling and other bits of tweaks.
All objects i created myself.
Wonderful cliffs... wonderful beach ... wonderful water... nice person