How do I create this water-like line wave effect ( same as image above) using Adobe Illustrator
2 Answers
Start by creating two lines with gradients applied to the stroke. In the gradient window use Apply gradient along stroke
to orient the gradient correctly
Next select the blend tool and use it to blend the two lines.
With the blend tool still selected hit enter to open the blend options dialogue. I think you'll find that specified distance works well, use the preview checkbox to adjust to your liking.
Next draw a simple line representing the path you'd like your blend to follow.
Finally select both your blend and the new path and go to Object > Blend > Replace Spline
to align your blend to your new path.
Hope this helps!
Using the Blend tool and Align to Page option applied to a blend
https://helpx.adobe.com/illustrator/using/blending-objects.html
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