macro of paua shell surface, abstract nature patterns

abalone abstract anatomical angled apertures aquacultural back blackfoot brown curved detail dirt dorsal encrusted endemic exterior folds haliotid haliotis holes iris life macro marine natural naturally nature object ormer outer outside pale pattern paua perforations pitted pores rainbow respiratory ripples round rounded selenizone shell snail spiral striated structure structured surface taxonomic texture textured zealand bivalve mollusk valves geometric patterned external patterns