There are just three objects in this scene. Aucasaurus by Dinoraul and two primitive flat planes with the geometry converted to subD and triangulated. I gave the water plane a shader then added a secondary height map to the displacement in the surface editor. The rock surface is a PBR material that I also added the displacement to and tweaked the parameters up to get the right sculpt to the surface. I wanted to see how the two surfaces would react to each other when coming into contact. Very pleased with it. Very taxing on my system though, took 8 hours to render at 2.0 render quality at 2000x1890 aspect ratio and 2000x1890 ppi. Click on the blue button to open larger image then click on the image to expand even larger to see details on the shoreline.