Effects > Distort > Ripple
Ripple
The Ripple filter allows you to create a water drop like ripple effect with concentric circles on the water surface.
1. Do one of the following:
 Choose Effects > Distort > Ripple
 
Click the Ripple button
2. Use the following options:
  Amplitude
Sets the amplitude of the waves.

Min = 1, Max = 200, Default = 50.
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