We hypothesise that marine algae and various common microbes of the atmosphere (spora) use chemical induction of water condensation to enable or increase their wind dispersal between their aquatic, terrestrial or epiphytic growth sites. Biogenic chemical cloud condensation nuclei (CCN) and ice nuclei (IN), sometimes co-occurring in single species (e.g.Pseudomonas syringae), release heat energy of phase change, thus contributing to local air movements that can be used both for lofting and for lateral dispersal of their producers. The phase-change catalysis may occur on the microbial surface (e.g.P. syringae) or may happen more distantly through the release of chemical precursors for suitable ions (e.g. plankton-derived dimethylsulphide [DMS] forming atmospheric sulphate). Small phytoplankton and bacteria take off from water through bubble-burst processes especially in “white-caps”, these often themselves caused by convective winds.