A graphic' worth a million words :
The red-circled wave (and associated layer) is Illustrator-made. The other waves were made in Photoshop just to support my problem : this is what I try to achieve in Illustrator. How can I automatically generate a certain number of copies from one layer (e.g. the wave) and again automatically and randomly place them around one position or in another layer (e.g. the ocean) ?