First-Timer Questions
Do You Need to Know How to Swim?
To try diving, no. To get certified, yes — here's the difference and what's actually required.
To try an introductory scuba dive, no — you can do a guided Discover Scuba experience without swimming skills. To get certified, yes — you must be able to swim and float. Basic water competence is a safety requirement, and the more comfortable you are in water, the better you'll dive.
- Try-dive
- No swimming required
- Certification
- Swimming required
- Typical test
- ~200 m swim, 10 min float
- What helps most
- Comfort in water
Trying scuba: no swimming needed
A Discover Scuba Diving experience is fully guided by an instructor in shallow, calm water. You don't need to be a swimmer to try it — which is why it's such a popular way for nervous beginners, kids and older first-timers to experience breathing underwater for the first time.
Getting certified: swimming required
To earn a certification you must demonstrate basic water competence, because real diving means being self-sufficient at the surface. Most agencies ask you to:
- Swim a continuous distance (commonly around 200 m / 220 yd) with no time limit and any stroke — it's about competence, not speed.
- Float or tread water for around 10 minutes.
There's no fast freestyle required — these tests simply prove you won't panic if you have to support yourself on the surface.
Your BCD: a life jacket on steroids
Underwater, buoyancy is handled by your BCD (buoyancy control device) — think of it as a life jacket on steroids. Inflate it and you float effortlessly at the surface. That's a big reason diving is accessible to children and older adults alike. Still, swimming ability and water comfort remain essential for certification and safety.
Comfort beats technique. You don't need to be a strong swimmer — you need to be relaxed in the water. The calmer you are, the slower you breathe, the better your buoyancy, and the more you'll enjoy every dive. Time in a pool before your course pays off enormously.
Learn the fundamentals of scuba — free
Build water confidence before your course with Diving Standard's free lessons on breathing, buoyancy and the basics every new diver needs.
Get the Diving Standard appFrequently asked questions
Can you scuba dive if you can't swim?
You can try a guided Discover Scuba dive without swimming skills, but you must be able to swim and float to get certified. Basic water competence is required for safety.
What swim test is required for scuba certification?
Typically a continuous swim of around 200 m (any stroke, no time limit) and floating or treading water for about 10 minutes — tests of competence and comfort, not speed.
Can kids and older people scuba dive?
Yes. Children can start with junior certifications (often from age 10), and there's no upper age limit if you're healthy and medically cleared. The BCD makes staying buoyant easy for all ages.