Looking at my earlier post of this scene I'm not 100% sure what I was 
thinking (color scheme). I like this one alot better, so thanks for the 
gentle nudge from comments.  I was able to get the scattering media in the 
clouds to fire up better by using a light_group for the clouds with 
global_illumination off .... I rotated the light sources 180 degrees from 
orginal positions, so I guess the scene is no longer looking east a sunset. 
I got that idea when reading about the type of scattering media I was using 
as being directional ..... (3.6.2.1.3  Scattering) *snip* ....largest when 
the incident light is anti-parallel to the viewing direction. RTFM as they 
say!!!! The cattails and grass are the same basic shapes with different 
scaling applied. The shells on the low tide area are just squashed spheres 
with specular and roughness settings to give a large highlight.

Jim

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