Yesterday, I pulled out my supplies for doing Suminagashi marbling. A very different experience than Ebru marbling, and very different results too. I really should practice this more often - I haven't tried it for a long time. So rather than paint and carageenan size, Suminagashi uses ink and water. There is not a lot of information about Japanese marbling available, but there is a book by Anne Chambers that you might be able to get if you are looking for detailed information.
A couple of the results -