The transmuted creatures can tread on any liquid as if it were
firm ground. Mud, oil, snow, quicksand, running water, ice, and
even lava can be traversed easily, since the subjects feet
hover an inch or two above the surface. (Creatures crossing
molten lava still take damage from the heat.) The creatures can
walk, run, charge, or otherwise move across the surface as if it
were normal ground.
If the spell is cast underwater (or while the subjects are
partially or wholly submerged in whatever liquid they are in),
the subjects are borne toward the surface at 60 feet per round
until they can stand on it.