Voxel Water in unity engine

I am trying to create a voxel style RPG like the one shown in Cube world. And I am trying to get an efficient low-GPU-intensive way to create Voxel water; like the water shown in these https://www.youtube.com/watch?v=ZCFIchEZk2s

https://www.youtube.com/watch?v=qJa2w-7edKA

However instead of Blender in unity. I feel it would be good to use a procedual shader (for foam, and waves, and adapting to players jumping in it) of somesort to be efficient for my uses (Ocean, rivers, lakes etc...). though I cannot think of a way to create this kind of shader.

Any help would be greatly appreciated. Thanks!