  We study gravitational collapse of a spherically symmetric scalar field in
Einstein-aether theory (general relativity coupled to a dynamical unit timelike
vector field). The initial value formulation is developed, and numerical
simulations are performed. The collapse produces regular, stationary black
holes, as long as the aether coupling constants are not too large. For larger
couplings a finite area singularity occurs. These results are shown to be
consistent with the stationary solutions found previously.
