  Supersymmetry is spontaneously broken when the field theory stress-energy
tensor has a non-zero vacuum expectation value. In local supersymmetric field
theories the massless gravitino and goldstino combine via the super-Higgs
mechanism to a massive gravitino. We study this mechanism in four-dimensional
fluids, where the vacuum expectation value of the stress-energy tensor breaks
spontaneously both supersymmetry and Lorentz symmetry. We consider both
constant as well as space-time dependent ideal fluids. We derive a formula for
the gravitino mass in terms of the fluid velocity, energy density and pressure.
We discuss some of the phenomenological implications.
