In Reply to: scuba diving - south posted by Bali karma on Wednesday, 11. March 2009 at 08:24 Bali Time:
You do 4 open water dives as part of the Open Water Diving certification. Maybe thats what they meant. Any qualifed diver can go down to 20 metres. I believe the USS Liberty is on an angle so you will see plenty of the wreck at 20 metres.
I usually dive at Nusa Lembongan, which is a day trip by boat from Sanur. You can 4 dives in a day from a boat.