If you could get contouring around those rocks and perhaps the puddles too
it would certainly break up the oneness it now has.  Only chance of that I
can think of is a overhead orthographic camera to plot out a heightfield
someway.  Oh, wait this is all isosurface huh.
At least you might have a chance with the wet sand bordered puddles as was
already suggested with a gradient y in layered texture, as long as those are
all the same y plane anyway.
Guess you spelled estuary wrong, I wasn't suere at first what it was meant
to denote until I saw the picture.

Bob

"Mick Hazelgrove" <mha### [at] mindaswinternetcouk> wrote in message
news:3874f1e9@news.povray.org...
> I'd appreciate your comments and any help you could give me with the sand
> texture. The sand is two differenced isosurfaces and the texture a simple
> pigment isosurface.
>
> Mick
>
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