@ Chashio: You just saved hours of my lifetime!

@ Vorro: I am Not cheating i have a set of 20 Brushes generated from clouds, jagged coast, wobble Coast, nebula, sandbank, cliffs and so on, its than giving you controll over a Black claud on a White layer, use the contrast tool to make it pure black white. Than select all Black, New layer, alter selection Round edges 1-2 Pixel, expand 2px, contract 2px, round 1 px. For the last Things i just created an Action.

@ Nocturn: use the selection and copy a Part of the underlying texture, than make it more light and less contrasty than the ocean, add darkblue borders, add immer glow yellow with strongline and a slight noise