Infinate stretched water

Ok, this is a bit hard for me to explain, so i'll try for ya..

Im working on a terrain thats sorta a coastline. Now, the whole terrain is really big, has to be. On the edge of the land, i want it to overlook the ocean, so the water stretches out for as far as you can view. However, the land takes up a lot of room, so the terrain begins to repeat well within ur view. I'm wondering if there is some way i could just make the water appear to run on forever. Anyone know of some trick for this? Thanks. :D