Instrumentation and calibration.- Flow cytometry instrumentation.- Digital microscopy and image analysis: where does it impact on oceanography?.- Applications of microphotometry to optical oceanography.- Calibration and quantitative analysis.- Pigments and fluorescence.- Algal pigment fingerprints: clue to taxon-specific abundance, productivity and degradation of phytoplankton in seas and oceans.- Energy transformation and fluorescence in photosynthesis.- Marine optics and light scattering.- Optics of marine particles and marine optics.- Light scattering properties of cells.- Microbial ecology through individual cell analysis.- Bacterial influence on the variability in the ocean’s biogeochemical state: a mechanistic view.- Molecular systematics, microbial ecology and single cell analysis.- From cell to Oceans.- From individual plankton cells to pelagic marine ecosystems and to global biogeochemical cycles.- From the ocean to cells: coccolithophore optics and biogeochemistry.- From cells to the ocean: satellite ocean color.- Individual and bulk analysis of the optical properties of marine particulates: examples of merging these two scales of analysis.- Flow cytometry in oceanography.- Advances in oceanography through flow cytometry.- Conclusion.- Concluding remarks: promises and limitations of individual cell and particle analysis.- List of participants.