Hydrodynamics of collective cell migration: the good, the bad and the chiral

Despite originating from the attempt of describing flow in water, hydrodynamics has now crossed the boundary of classical fluid mechanics and surged as general theoretical framework for modelling the dynamics of large wavelength and low frequency excitations in arbitrary continuous media: from electron systems to biological materials. In this talk, I will review our recent theoretical and experimental efforts towards modelling the collective motion of cells at the large scale using active hydrodynamics. In particular, I will focus on the statistics of chaotic motion in spindle-like epithelial cells and on the role of cellular chirality in open and confined environments.