I have a disk herniation at C6-7 with no symptons or pain for the last two years. I have always wanted to avoid surgery, and since I have not had any pain or numbness or tingling for two years now..I wasn't concerned about it. Now I want to get my OW certification and my PC says no because of the disk. I took the Discover SCUBA in Belize last year..did 3 dives with no problems. Anyone have info or experience with diving and cervical disk issues?