Scuba Diving FAQs: Quick Answers

# Scuba Diving FAQs: Quick Answers

New divers ask remarkably similar questions, and most of the answers are shorter and more reassuring than you might expect. Here are straight answers to the ones we hear most, with links to deeper guides where you want the full story. If you are still weighing up the whole idea, start with [is scuba diving right for me](https://scubadownunder.com/blog/is-scuba-diving-right-for-me).

## Getting Started

### Can I dive if I am not a strong swimmer?

Almost certainly. You do not need to be fast, just water-comfortable. The Open Water course requires a 200 metre swim (any stroke, no time limit, as slow as you like) and a 10 minute float or tread. If you can manage both without panic, you can learn to dive. Calm matters far more than speed underwater, and plenty of average swimmers make excellent divers. If you are unsure, test yourself at a local pool before booking. Our guide to [fitness for diving](https://scubadownunder.com/blog/how-fit-do-you-need-to-be-to-scuba-dive) covers what shops actually expect.

### How old do you need to be?

The minimum age for Junior Open Water in Australia is 10. Junior divers under 12 are limited to 12 metres and must dive with a parent, guardian or dive professional, and the certification upgrades to a standard Open Water rating in the diver's mid-teens. At the other end there is no upper age limit, just an honest medical questionnaire. Anyone 10 or over can also do a [Discover Scuba experience](https://scubadownunder.com/blog/discover-scuba-diving-try-before-you-commit) before committing to a full course, which is a sensible first step for younger kids and nervous adults alike.

### How long does it take to get certified?

Three to four days for Open Water, or two weekends if you prefer to spread it out. Completing the theory online at home shortens the in-person time considerably, and referral options let you do the classroom and pool work locally, then complete your certification dives on holiday somewhere warm. Advanced Open Water adds another two days later, whenever you are ready. Our [full timeline guide](https://scubadownunder.com/blog/how-long-does-it-take-to-get-scuba-certified) breaks down every format Australian shops offer, from intensive blocks to slow-and-steady evening courses.

### Can I try diving before committing to a course?

Yes, and if you are on the fence you probably should. [Discover Scuba Diving](https://scubadownunder.com/blog/discover-scuba-diving-try-before-you-commit) gets you breathing underwater with an instructor in a single session, usually for $150 to $250, with no course commitment, and many shops credit the fee toward Open Water if you continue. You will know within twenty underwater minutes whether the sport is for you. Most people surface grinning; the rest have spent an afternoon finding out cheaply, which beats abandoning a half-finished course.

### How deep can beginners go?

Open Water divers are qualified to 18 metres, and junior divers under 12 are limited to 12 metres with a parent or professional. That sounds restrictive until you realise most of the ocean's colour, light and life concentrates in the top 18 metres anyway; your [four certification dives](https://scubadownunder.com/blog/what-to-expect-in-your-open-water-training-dives) are shallower still. When you are ready for more, Advanced Open Water extends you to 30 metres, which opens up most of Australia's famous wrecks and deeper reef sites.

## Money and Gear

### Is scuba diving expensive?

Getting certified costs roughly $450 to $900 in Australia, and after that the sport scales to your budget. Shore diving with your own basic gear costs almost nothing beyond air fills; guided double boat dives typically run $150 to $250 with gear hire; liveaboards are the splurge end. Most divers accumulate gear gradually over years rather than buying everything at once. Our [cost of certification breakdown](https://scubadownunder.com/blog/how-much-does-it-cost-to-get-scuba-certified) covers what you will pay, where the money goes, and where it is safe to economise.

### Do I need to buy my own gear?

Not at first. Most new divers own mask, snorkel and fins (where personal fit matters most) and rent everything else. A dive computer is usually the smart next purchase, followed by exposure protection, with the BCD and regulator last once you know your diving style. Your course includes [all the equipment you need](https://scubadownunder.com/blog/gear-youll-use-in-your-course), and our [buy versus rent guide](https://scubadownunder.com/blog/scuba-equipment-buy-vs-rent-2025-guide-for-aussie-divers) walks through the sensible buying order and what each piece costs in Australia.

### Can I dive with glasses or contact lenses?

Contact lenses, especially soft ones, work fine under a mask; just keep your eyes closed if you ever need to flood and clear it. Glasses do not fit under a mask, but prescription mask lenses are affordable and most dive shops can fit them off the shelf for common prescriptions. Many mildly short-sighted divers also find the water does part of the job, since objects underwater appear about a third larger and a quarter closer than they really are.

## Health and Comfort

### Can I dive with asthma or another medical condition?

Maybe, and the answer belongs to a doctor rather than a forum. Australia uses conservative dive medical screening, and conditions like asthma, heart issues, ear problems and some medications need clearance from a doctor trained in dive medicine before you can be certified. Plenty of people with well-managed conditions dive safely with that clearance. Read our [guide to dive medicals and what actually disqualifies you](https://scubadownunder.com/blog/scuba-diving-medicals-what-disqualifies-you) before assuming you are excluded, because most people who ask the question end up diving.

### Is diving different for women?

Physiologically, barely; practically, a little. The one hard rule is pregnancy: diving while pregnant is not recommended at any stage, full stop. Beyond that the differences are mostly about equipment, and they are solvable: get a wetsuit and BCD actually cut for your body rather than a unisex compromise, because fit affects warmth, comfort and safety. Smaller divers of any sex also tend to use less air than their larger buddies, which is a quietly satisfying advantage on every dive.

### What if I cannot equalise my ears?

Equalise early, often and gently, starting at the surface and continuing every metre or so, and never push through pain. Descend feet first, ideally down a line, and if an ear will not clear, ascend half a metre and try again rather than forcing it. Almost all equalisation trouble is technique rather than anatomy, and it is fixable; our [equalisation guide](https://scubadownunder.com/blog/equalisation-made-easy-a-divers-guide-to-stress-free-descents) covers the methods. If problems persist across multiple dives, see a doctor with dive medicine experience before diving again.

### What about seasickness?

Common, manageable, and nothing to be embarrassed about. Take a non-drowsy seasickness tablet the night before and the morning of a boat trip (test the brand on land first), eat a light breakfast, stay on deck watching the horizon, and get into the water promptly, because the symptoms usually ease once you descend. If boats remain your enemy, Australia is arguably the world's best country for [shore and jetty diving](https://scubadownunder.com/dive-sites), and you can build a whole diving life without leaving the beach.

### Is southern Australia too cold to dive?

No, but dress for it. Southern waters range from low teens in a Tasmanian or Victorian winter to the low twenties in summer, which means a 7 mm wetsuit, semi-dry or drysuit rather than tropical neoprene. The reward is some of the most distinctive diving on the planet: kelp forests, seadragons, seal colonies and jetties crowded with life found nowhere else. Our [wetsuit guide](https://scubadownunder.com/blog/donning-the-second-skin-your-essential-guide-to-buying-and-choosing-a-diving-wetsuit) and [season-by-season guide to Australian diving](https://scubadownunder.com/blog/best-time-of-year-to-dive-in-australia) will help you match the gear to the water.

## Safety and Marine Life

### Are sharks dangerous to scuba divers?

Statistically, barely at all. Incidents involving scuba divers are vanishingly rare worldwide, and most sharks you will meet in Australian waters, from wobbegongs to Port Jacksons to [grey nurse sharks](https://scubadownunder.com/blog/the-grey-nurse-shark-the-gentle-giant-of-australias-reefs), range from indifferent to comically placid. Divers generally count shark sightings as the highlight of a dive and pay good money for them. Treat sharks like any large wild animal: keep your hands to yourself, stay calm, and enjoy the privilege. The [bull shark](https://scubadownunder.com/blog/bull-sharks-the-oceans-nomadic-apex-predator) deserves respect, but respect is not fear.

### What about crocodiles in northern Australia?

A fair question, and a real consideration in the Northern Territory and far north Queensland. Saltwater crocodiles are genuinely dangerous, and the local dive industry manages the risk by choosing sites, seasons and conditions with great care; [Darwin Harbour's wreck diving](https://scubadownunder.com/blog/darwin-harbour-wrecks-dive-guide) happens under exactly that sort of local management. The rule is absolute: in croc country, dive and swim only where local operators do, and never improvise your own site selection. South of the tropics, crocodiles are simply not a factor.

### What happens if I panic underwater?

Training exists precisely so this rarely happens; every skill you drill in the pool is a panic-prevention tool. If you feel anxiety rising, stop moving, hold something stable if available, breathe out long and slow, and signal your buddy or guide. Never bolt for the surface. Tell your instructor about nerves before the dive; they manage anxious students every single week and will pace things accordingly. Our [safety tips for new divers](https://scubadownunder.com/blog/essential-safety-tips-new-divers) cover the habits that keep small problems small.

### What if I use my air too quickly?

Every new diver does, so retire the embarrassment now. High consumption comes from quick shallow breathing, poor trim and constant finning, and it improves naturally with experience. Slow everything down, breathe long and deep, and get your [buoyancy](https://scubadownunder.com/blog/perfect-buoyancy-the-key-to-effortless-diving) and [weighting](https://scubadownunder.com/blog/wait-how-many-weights) sorted, because a balanced diver burns far less gas. Guides plan around new divers' consumption; just report your pressure honestly when asked, and never fudge the number to stay down longer.

### Do I always need a buddy?

For recreational diving, yes. Training, planning and equipment all assume pairs, and diving with a guide or group counts. Solo diving does exist as a separate discipline, but it requires its own certification, redundant equipment and substantial logged experience; it is not something a new diver should improvise by drifting away from the group. Our look at [solo versus buddy diving](https://scubadownunder.com/blog/solo-or-buddy-should-you-ever-scuba-diving-alone) covers the debate honestly, including why the buddy system survives every challenge to it.

### Can beginners do night dives?

Yes, once your basic skills feel comfortable, and it is worth the small leap. Many divers do their first [night dive](https://scubadownunder.com/blog/the-enchantment-of-night-diving-in-australia) as part of the Advanced Open Water course with an instructor alongside, which is an ideal introduction. Start on a site you already know in daylight, carry a primary and a backup torch, and stay close to your buddy. Most people are surprised by how calm night diving feels: your world shrinks to a torch beam, and the ocean changes shift entirely.

## Certification and Travel

### Does my certification expire?

No. Once certified with PADI, SSI or any major agency, you are certified for life. What expires is sharpness: if you have been out of the water for 6 to 12 months or more, book a refresher before your next dive. An hour or two [back in the pool](https://scubadownunder.com/blog/what-to-expect-in-your-pool-sessions-confined-water-training) rebuilds the muscle memory quickly, most shops run refreshers cheaply, and operators will quietly thank you for arriving current rather than rusty after a long break.

### Will my certification work overseas?

Yes. PADI, SSI and the other major agency cards are recognised at dive operations worldwide, and you can mix agencies as you progress: an SSI Open Water diver can take a PADI Advanced course and vice versa. Carry your physical card or the agency's app, and expect reputable overseas operators to ask for it along with your logbook, which is a good sign rather than an obstacle. Our [agency comparison](https://scubadownunder.com/blog/padi-vs-ssi-vs-naui-which-scuba-certification-agency-is-right-for-you) explains how the systems interlock.

### How soon can I fly after diving?

Wait at least 18 hours after a single dive and 24 hours after repetitive or multi-day diving before flying. The cabin pressure of an aircraft is equivalent to altitude, and flying too soon raises the risk of [decompression sickness](https://scubadownunder.com/blog/decompression-sickness-symptoms-causes-and-what-to-do). Plan trips with a buffer: make the last day of a dive holiday a surface day, and note that liveaboard operators schedule final dives with the flight rule in mind. Driving over high ranges after diving deserves the same caution as flying.