Butterflies are fascinating creatures but pollution and loss of habitat threaten butterfly species with extinction. NABU, Gremany’s largest nature conservation organization, wanted to call attention to this problem and help conserve their valuable habitats. For that reason, NABU started a campaign named “keep them flying”. NABU created flipposters to protect them through donation. With one euro coin, the flipposters are activated; the images of butterflies are rotating quickly which created the impression of colorful butterflies fluttering over the surface of the image. This campaign is also available on smartphone enabling people to share with friends and keep them flying.