I'll try to explain my problem in simple terms. I modeled object in sketchup,and use it's paintbucket tool to texture it. After some moving around,i managed to get it in unity as fbx (Unity 2.6.1 pro,but only as trial). I've used island demo scene setup,and simply added model to it (just modified terrain a bit). Model seems to be ok (textures in place etc.),but strange thing happens when i enter underwater and then exit.
This is pic before going underwater.

And it looks like this when i exit.

This affects every model i import,except models that are already in unity. And it also affects custom skyboxes.
Can someone explain me what am i doing wrong?
I know that underwater is causing this bug or what it is,but i just couldn't figure out if it can be fixed.
What does the underwater script look like?
– karlOk, I think I get what you mean now. Thank you for your help.
– Guwang