public void setCausticsIntensity(float causticsIntensity) {
        this.causticsIntensity = causticsIntensity;
        if (material != null) {
            material.setFloat("CausticsIntensity", causticsIntensity);
        }
    }
Sets the intensity of caustics underwater. Goes from 0 to 1, default is 0.5.

@param causticsIntensity the desired intensity (&ge;0, &le;1,
default=0.5)
jme3-effects/src/main/java/com/jme3/water/WaterFilter.java