Waves, and a perfect sleep

G'day all,

The best night's sleep I've ever had was by the seashore, wtih the gentle sound of waves breaking on the beach. I've been looking for a CD with the sound of waves, a seashore kind of sound. I've been able to find several discs, but they all have music intermingled somehow. I'd love to get my hands on a disc with the sound of waves washing in on the beach, set a CD player on repeat, and get a great night's sleep. Any ideas? Thanks in advance, Jeff