This thesis seeks to analyse Frank Herbert's Dune (1965) from the point of view of its treatment of ecology and determine the novel`s role as a pioneering work of science-fiction focussing on ecology. The theoretical part presents Dune within the context of Frank Herbert`s work as well as within the context of other works presenting a similar agenda. Consequently, the 1960s will be presented as the turning point for science-fiction writing as well as ecocriticism, the newly formed critical perspective. The interpretative part offers a deeper ecocritical analysis of Dune, with the emphasis on the role of water, the warp speed technological developments, and perusal of underlying environmental warnings. The thesis thus ultimately presents the ecocritical viewpoint of Dune, interpreting its potential ecological warnings and pondering upon possible ways to avoid ecological disaster. Key words: Frank Herbert, Dune, ecocriticism, science-fiction, water conservation, resource extraction