Once you’ve learned the basics—or if you already have some experience—we’ll move on to mastering all of UE5’s Landscape tools! I’ll teach you how to sculpt terrain by diving into all the resources available in the engine, as well as how to create a custom Landscape material we’ll use to paint highly detailed materials across our island. I’ll even show you how to paint realistic foliage in your levels.
https://dev.epicgames.com/community/learning/tutorials/wlGz/lesson-11-adding-ocean-water-unreal-engine-5-water-plugin