How do you use the Boolean Modifier on an Ocean Modifier to cut a cube in half and apply a material to the bottom half only

Question

I would like to create a cross section of a patch of ocean (animated surface at the top, terrain at the bottom and water in-between), the starting point is to create this...

... how can this be done in Blender 2.8?

Thanks,

Simon

Answer 1

With a boolean you can use difference as your boolean and select the ocean object.