For an exhibition of the well-respected artist Yadegard Asisi about the “Great Barrier Reef” in Leipzig, we have built a construction, which takes the visitors to a journey into the fascinating underwater scenery. The structure is made of two half-shells with a height of 14m, which are covered with a stretch-textile. On the upper side there is a ring covered with a projection-foil which assists the optical illusion with moving pictures. Together with the light-effects, this structure is absolutely an optical highlight.