FLuX-- FLuid imaging eXperiments-- is a research group devoted to imaging fluids in the laboratory and field for visualization, estimation and inference. Our group started with a multiple Particle Tracker and progressed to coupled physical-numerical systems to study Geophysical Fluids in the laboratory, e.g. the Planet-in-a-Bottle Project. This experiment also brought forward several issues in Data Assimilation, uncertainty quantification and sampling methodology that leads to other field work. Work in imaging bubbly flows then followed. Currently, our primary approach involves novel imaging techniques, computational photography, computational vision, and robotics to tackle low-level issues in fluid imaging.