mikeloyco:Then what's he difference between an OW and Junior OW diver?
Both require you to dive with a certified buddy, both have a "recommended" max depth of 66-70'
Sounds like the only difference is in what specialties or advanced training you are allowed to do after the cert.
I'm just saying...
According to PADI Standards:
The difference is age. A Junior Open Water Diver is one who is under the age of 15.
For 10 and 11 years old, the maximum depth is 40' and they must dive with a professional (divemaster or above) or a certified parent or guardian.
For 12 to 14 years old, they can go to 70' and can dive with any certified diver of legal age.
From 15 and up, they are Open Water divers. It is taught that Open Water divers should not exceed 60' without additional training, 100' if Advanced Open Water certifiied, and 130' when they have completed the Deep Diver specialty.