Fracton phases are characterized in that their elementary excitations have restricted mobility. In the context of hydrodynamics it has been shown theoretically, and confirmed experimentally, that such restricted mobility leads to novel dynamical scalings. In this talk, I will introduce the hydrodynamics of fractons with translation symmetry, focusing on the simplest case where dipole moment is the only additional conserved quantity. This hydrodynamics turns out to have rather exotic properties, owing to the fact that translation invariance leads to a non-trivial extension of spacetime symmetries. I will also discuss fluctuation effects using an effective field theory approach. This may contain relevant nonlinearities, which potentially lead to an instability of the hydrodynamics at very long wavelengths.