polycount per coral/rock: 3072 in viewport, 190000 at render texture resolution: 750x750, diffuse, bump and specular maps
modifier stack left as created for maximum flexibility.
all textures are tileable so can be applied to any uvw'd surface, use the supplied spec maps as displacement image map and increase polycount of target model for greater detail (supplied models are examples of this)
although the models supplied are in 3ds format, these are tertiary, what you are mainly paying for is the textures that i have created, if you know how to add image based displacement to models in your native 3d package then you dont need the supplied models. Make your own, add the uvws then create your material using the textures supplied