How many dives, and where
Entry-level courses usually include about four open water training dives, spread over at least two days. Sites vary with the school: a calm bay reached from the shore, a freshwater quarry or lake, or a boat trip to a sheltered reef. Instructors choose training sites for easy access, gentle conditions and somewhere to kneel or hover while skills are done.
What a training dive day looks like
- Briefing. The instructor explains the site, the plan, the skills for that dive, the hand signals and what to do if you get separated.
- Gear up and buddy check. You assemble your own equipment and check your buddy, as you practiced in the pool.
- Entry. From the shore you wade or swim out. From a boat you might use a step-in or a seated backward roll, depending on the boat.
- Descent. Usually slowly, often along a line or a sloping bottom, equalizing as you go.
- Skills and a tour. You repeat some pool skills, then swim around the site with the group.
- Ascent and safety stop. A slow ascent, usually with a pause of about 3 minutes at about 5 m (15 ft).
- Debrief and logbook. You talk through what went well, what to improve, and record the dive.
Conditions can surprise you
Open water rarely feels like a pool. It may be colder, so you will probably wear a thicker suit and need more weight. Visibility can be a few meters instead of the whole pool. There may be a gentle current or surge moving you back and forth. All of this is normal, and it is the reason the open water dives exist. Your instructor sets the limits for each dive and stays close.
If conditions are poor on the day, a good school will postpone or move the dive. That is a safety decision, and you should expect it to happen sometimes.
New things you may learn
Open water dives often add skills that only make sense outside a pool: basic navigation with a compass and natural features, controlling buoyancy over a real bottom, and an emergency swimming ascent practiced under close supervision in the way your agency specifies. Some courses also include a short snorkel or surface swim.
Keeping a logbook
Record every dive: date, site, maximum depth, time underwater, gas used, conditions, buddy and what you practiced. Your instructor signs the training dives. Later, a logbook shows dive centers how much and what kind of diving you have done, and it helps you notice when your skills need a refresh.
After the last dive
Once your instructor confirms every requirement is met, the school processes your certification with the agency, and you receive a card or a digital record. Your first dives after the course are a good time to stay close to the conditions you trained in and build experience one step at a time. See after certification.
Open water FAQ
Can I do the open water dives somewhere warm?
Often, yes. Many divers do the theory and pool training at home and the open water dives on a trip. Ask both schools how they handle this before you book.
Will I see much on training dives?
Instructors usually pick sites for easy training conditions, not for scenery. Many divers still find something to watch, and there is plenty of time for sightseeing after certification.