[4.27] how to blend waterplanes

Hello, everything is in the title. I’m looking for a way to blend two waterplanes together. it’s very important in my map that there’s no break between soft, and salt waters. So i can’t use a mesh, landscape, or altitude trick. So i’m looking for ideas to create a join. could be some mud, particles, or whatever. I’m not using UE built in water system btw. as it didn’t reach production yet