  Regularization by noise for certain classes of fluid dynamic equations, a
theme dear to Giuseppe Da Prato (see G. Da Prato and A. Debussche, Ergodicity
for the 3D stochastic Navier-Stokes equations, J. Math. Pures Appl., 2003), is
reviewed focusing on 3D Navier-Stokes equations and dyadic models of
turbulence.
