''Sometimes I think; and sometimes I am.'' Paul Valéry In this text I set out to discuss the relationship between a selection of four works which bring together the sciences, natural processes, the body and sensorial perception. These works are, Ned Kahn’s ‘Seismic Sea’, Luke Jerram’s ‘Tide’, Hugo Kükelhaus ‘Strudel, Wirbel, Spirale’ and Antenna Theater’s ‘Sands of Time’. These works blur boundaries as it is difficult to categories them. They could be seen in science centres visualising scientific principles, in art exhibitions for their aesthetic qualities or possibly function as types of scientific instruments in their own right. They have in common that they use natural processes or environments as a medium of visualisation or as an inte...