1...Glue sand. I got this sand at an art supply store in Tokyo.
2....Place fence, boat and rocks. Add foliage and grass.
3....Pour clear resin. Let it be hardened.
4....Add clear gel medium making for wave. Make wave with toothpick.
After drying it becomes clear. At the edge of the "water" add a bit
of white sand. It looks bubbles.
I got that clear gel medium at the art supply store.