text: Archimedes principle does not consider the surface tension (capillarity) acting on the body. Moreover, Archimedes principle has been found to break down in complex fluids.
  There is an exception to Archimedes principle known as the bottom (or side) case. This occurs when a side of the object is touching the bottom (or side) of the vessel it is submerged in, and no liquid seeps in along that side. In this case, the net force has been found to be different from Archimedes principle, owing to the fact that since no fluid seeps in on that side, the symmetry of pressure is broken.