I think that bubbles are very sensitive when it hits the water and that the bubbles can change the flow of the water. I think that bubbles have little affect on land animals but it will possibly change the temp in the air.
A saturated solution is the state of a solution where the solvent has accepted as much of the solute as possible. An unsaturated solution still has room for more of the solute. And I know you didn't ask this, but a supersaturated solution is a solution that has been made to accept more solute than should be possible through external forces, such as heating the solvent to the point where it will accept more solute.