Projecting onto water surface

I need to project onto water surface and I remember I ve seen a product that would create some kind of projecting layer on the surface, anybody knows or has any other idea?
if you are at Node13 meet me there…

Hello, you should watch this video:

Hello IO,

are you talking about this?

3D Water Screen Projection technology uses a submerged nozzle that sprays a thin fan of water onto a screen that works by diffusing light and projects the image towards the audience. Looks stunning ;)

No and no, I want to project on the surface but with no balls… :)

Haven’t tried it myself but you probably need some chemistry >
Which reminds me of this >

Maybe some milk?