You can also just animate the default shapes (displacement) of a Water Shader using the same Transform Input Shader method. Put the Transform shader after the Water Shader (water shader feeds into the Transform Input's input port), then enable Translate in the Transform Input Shader and animate the x, y, z values to change over time. Y animation (middle value) will make the noise seem to "evolve" (change) over time, while x and z animation will make the waves simply appear to move or "slide" across the surface.
- Oshyan