Two different goals
Discover Scuba Diving (DSD) is a taste of scuba: enough theory and pool practice to dive safely with an instructor right next to you, done in a day. The PADI Open Water course is a full certification, the internationally recognised qualification that lets you dive independently, with a buddy, anywhere in the world, for the rest of your diving life.
If you're not sure diving is for you yet, or you only have a day or two, DSD is the sensible starting point. If you already know you want to keep diving after this trip, Open Water is the better investment.
What each one actually includes
DSD at Sober Diving covers basic diving theory, a pool session to get comfortable with the equipment and your breathing, and then one or two dives in the ocean to a maximum depth of 12 metres, with a qualified instructor close by the whole time. Both DSD and Open Water share the same minimum age of 10, with a junior certification for Open Water below the standard adult age.
Open Water is built differently: five e-learning knowledge units you work through before or during your trip, pool sessions to practise the core skills, and two days of ocean training dives, building up to a certification valid to 18 metres.
Time and pace
DSD is a single session, roughly half a day once you add the pool time and the boat trip. Open Water takes two to three days, since the course has to cover the full skill set, plus real ocean dives on separate outings rather than one long session. If your trip to Nusa Lembongan is short, DSD fits into almost any schedule; Open Water needs you to block out the better part of your stay for it.
Working through the e-learning before you arrive shortens the in-person part of Open Water, since the theory is already done and your time on the island can go straight to the pool and ocean sessions.
Cost
At Sober Diving, DSD runs IDR 1,400,000 for a pool session plus one ocean dive, or IDR 2,000,000 for a pool session plus two ocean dives. The PADI Open Water course is IDR 6,500,000, which includes the e-learning materials, pool and ocean training days, your instructor, equipment, and the PADI certification fee itself. See the full prices page for current figures. Neither price includes the fuel surcharge that applies on days the boat runs to more distant sites.
What happens afterwards
A DSD experience doesn't come with a certification card. If you want to dive again on a future trip, you'll either repeat a DSD or go ahead with Open Water at that point, since DSD skills don't carry over as credit toward the course.
Open Water, on the other hand, is yours for life: once certified, you can rent gear and join fun dives anywhere in the world without another instructor needing to be at your shoulder the whole time. It's also the prerequisite for every course that follows it, from Advanced Open Water to specialties to professional-level training, so it's the one certification almost every ongoing diver ends up holding regardless of where their diving takes them next.
Upgrading partway through your trip
This is a common path. Plenty of divers do a DSD to see if they enjoy it, then decide partway through their stay to go ahead with the full Open Water course. Mention this when you book if it's even a possibility for you, since it affects how your days on the water get scheduled.
Choosing between the two
If you've never breathed underwater before and you're testing the waters, Discover Scuba Diving is the lower-cost, lower-commitment way to find out. If you already know diving is something you want to keep doing on future trips, going straight to Open Water saves you paying for both experiences separately. Either way, talk to the shop about your schedule and goals before you book, since the right choice depends on your trip length and how sure you already are.



