  We discuss a new mechanism of drop coarsening due to coalescence only, which
describes the late stages of phase separation in fluids. Depending on the
volume fraction of the minority phase, we identify two different regimes of
growth, where the drops are interconnected and their characteristic size grows
linearly with time, and where the spherical drops are disconnected and the
growth follows (time) 1/3. The transition between the two regimes is sharp and
occurs at a well defined volume fraction of order 30%.
