I made a quick customizable shoreline. It's realistic enough to do in a pinch and is highly customizable for most scales, from closeups to drone shots.
Can it be one day animated? lol
it probably can! animate the noise modifiers in the node editor and that will give little wave motions. I haven't experimented with that yet however.
This is super cool
does this lag?
hmm, I'm not sure what you mean! If you're talking about performance cost, it's pretty low-overhead. It's effectively just 3 planes, so no complicated geometry. The longest bits to render will be the alpha-ed planes, but overall it should be decently quick!