The peculiar intergrability of the Davey-Stewartson equation allows us to a
nalytically find solutions describing the simultaneous formation and intera
ction of one-dimensional and two-dimensional localized coherent structures.
The predicted phenomenology allows us to address the issue of interaction
of solitons of different dimensionality that may serve as a starting point
for the understanding of hybrido-dimensional collisions recently observed i
n nonlinear optical media.