sea fan coral & http://www.pinterest.com/pin/258534834833937583/
Amazing hand-drawn organic patterns by Vasilj Godzh, via Behance.
Weathered Rock Formations - natural textures; organic patterns; nature's artwork
All that is gone by Peter Nijenhuis on Flickr.
Hand drawn organic pattern on a kraft paper notebook by AbsentMind
This dahlia flower has patterns of repetitive circles to form another circle. The negative space would make an interesting model.
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Jeanne Opgenhaffen’s large wall sculptures mimic landscapes and other organic patterns Green Barbados
Art | アート | искусство | Arte | Kunst | Paintings & Installations | "shark tooth nebula" (painting by: http://anuvys.deviantart.com/)