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Practice tests for every dive level

Free, interactive mock tests to check your knowledge before (or after) a course. Every answer comes with a short explanation. Ready for the real thing? Find a certified centre on UiDive.

Discover Scuba

New to scuba? Check you know the basics before your first breath underwater.

15 questions · 10 per test · pass mark 75%

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Open Water

Gas laws, equalising, signals, buddy skills and safe ascents. The foundations every diver needs.

26 questions · 15 per test · pass mark 75%

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Advanced Open Water

Deeper diving, navigation, night and current diving, gas planning and reading conditions.

25 questions · 15 per test · pass mark 75%

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Enriched Air (Nitrox)

Oxygen percentages, maximum operating depth, partial pressures and oxygen safety.

15 questions · 10 per test · pass mark 75%

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Deep Diver

Planning and managing dives to 40 m: gas, narcosis, limits and redundancy.

15 questions · 10 per test · pass mark 75%

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Wreck Diver

Hazards, silt, lines, penetration rules and respecting wreck sites.

15 questions · 10 per test · pass mark 75%

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Rescue Diver

Recognising problems, in-water rescue, first aid, oxygen, CPR and emergency planning.

25 questions · 15 per test · pass mark 75%

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Divemaster

Leading dives, briefings, risk management, gas consumption and dive physics.

15 questions · 10 per test · pass mark 75%

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Freediving Level 1

Breath-hold physiology, blackout safety, equalising and buddy procedures.

25 questions · 15 per test · pass mark 75%

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Freediving Level 2

Mouthfill, residual volume, training tables and safe depth progression.

12 questions · 10 per test · pass mark 75%

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These questions are written by UiDive from general, public diving knowledge. They are for practice only and don't replace a course with a certified instructor.

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