A little Help with a Fluide Simulation is needed

Dear Love Community,
I’m a little bit Stupid.
But the Problem is.
I will create a Fluid Simulation.
And the Fluid Simulation is going Allreight,
but at the Last Step …
… there is the Domain Mesh …
… Who is arround the Simulation
… Even in the Rendering.

So my question is:
In which a way I can remove this Silly Domain Mesh
out of my Rendering, so that I can see the Simulation.

A little bit Stupid

Samoth Lahme

Have you checked to make sure all the nodes for your Domain material (in the Shader editor) lead to the Volume material output and not the Surface material output?