UE4 brings me water material but this a material. So we use water material on a object see like water but physics not a water physics.
I’m used cryengine 3 and water was very realistic.
How can I realistic water?
In case you are looking for some more material on Water Shaders, I wrote a tutorial on how to create a realistic water shader in conjuction with a swimmable water volume tutorial using some Post Process effects to add a bit of realism while underwater as well.
The actual shader itself can be downloaded at the bottom of the tutorial if you would rather skip ahead
Be aware that the OP was asking about the fluid surface material that was in previous versions of the engine. This was removed due to third party software. There are users on the forums that have done some things with it, but nothing that is currently in the engine.
I realise they mentioned fluid surfaces but I think they were referring to the cry engine “open ocean” effect as a whole.
So they next thing after all the tips above would be to create the ripple effect coming from a physical body touching the material layer.
Quite a bit above my current level of knowledge though. haha