I am starting a project that requires a body of water. I was going to use nurb surfaces to form the ocean. After this step, I am going to access salt levels of the ocean that I am illustrating and color code it on the 3d model. Doe anyone have any suggestions? I don''t know if nurb surfaces won''t work and maybe i should use bezier patches. Ultimately, if i use nurb surfaces i will be using many to configure the top, bottom and sides of the ocean. However, I don''t know how to color code specific locations of the surfaces. thanks, laura laura stephens