Zoo Frankfurt isn’t just one of the top 10 zoos in Germany – it also has one of the most beautiful aquariums. Unfortunately, most visitors don’t know about it. To change this, we used a technology that brings a traditional print ad to life. All that is needed is a smartphone with QR code reader and a small piece of plastic film. By bending the film into a pyramid and placing it upside down on their mobiles, people created a mini-aquarium with its underwater inhabitants as a 3D projection. This “Holoquarium” especially appeals to families with children, inviting them to experience the Zoo Frankfurt’s fascinating underwater world.