  We collect and describe the observed geometrical and dynamical properties of
turbulence in quantum fluids, particularly superfluid helium and atomic
condensates for which more information about turbulence is available.
Considering the spectral features, the temporal decay, and the comparison with
relevant turbulent classical flows, we identify three main limiting types of
quantum turbulence: Kolmogorov quantum turbulence, Vinen quantum turbulence,
and strong quantum turbulence. This classification will be useful to analyse
and interpret new results in these and other quantum fluids.
