The ocean floor is generated by measured points within NfDesign.
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Seaweeds are created referring to XYZ positions and heights of seaweeds computed by another program.
Textures are mapped on generated 3D objects for seaweeds.
Sea level is a 3D object having 3D effects and half-transparent material to reflect the celestial sphere with texture.
Rendering is put in practice by ray-tracing method.