Naniwa, you're an angel!!! That is exactly what I wanted to achive - thank you so much for your help!

And yes, GKDantas, I know that the ocean is just a primitve, but perhaps you're right, I need some pirates here.... ;o)) But first of all I have to build my ship, the Black Pearl, which is my next big goal after the ocean
Actually, my problem are the shaders. No matter which I tried, the ocean never looked like in the fourth pic, that's why I asked for your help and a tut. But now that I have the file that Naniwa offered, I have something to start with and it looks so much different from what I tried with the ocean primitive (it's perfect!)

Thank you all very much and take care,

~Sassy~