At time of flood ants have adapted a way in which they can survive . The ants bind together and form a spherical ball that floats on the water and moves on a constant motion using capillary forces. This movement also allows the formation of an angular motion that plays a role in keeping all the members of the floating colony together and prevent them from drowning .
This very fascinating and perfectly calculated motion might be used and mimicked in robotics.
Work cited: Annual Review of Fluid Mechanics . Walking on Water: Biolocomotion at the Interface.John W.M. Bush and David L. Hu