Scuba Diving Articles & Guides

Free scuba diving guides from Diving Standard — costs, certification, depth limits, safety, gear and the questions every new diver asks. Written by divers.

Costs & Certification

• How Much Does Scuba Diving Cost? (2026 Full Breakdown) — What you'll actually pay to try diving, to dive regularly, and to build your own kit — plus the smartest order to buy gear.
• How Much Is Scuba Certification? (Prices Around the World 2026) — What an Open Water course costs in the world's top dive destinations — and why your instructor matters more than the agency or the price.
• How to Get Scuba Certified: A Step-by-Step Guide (2026) — From choosing where to train to holding your certification card — the simple path every new diver follows.
• How Long Does It Take to Get Scuba Certified? — The realistic timeline for an Open Water course — and how to make it faster or more relaxed.
• Do I Need to Buy My Own Scuba Equipment? — Short answer: no — not for your first dives. Here's what to rent, what to buy first, and how to spend wisely.
• PADI vs SSI vs NAUI vs BSAC: Which Agency Should You Choose? — PADI, SSI, NAUI, SDI and BSAC all certify you to the same global standard. Here's how they differ, and the one thing that matters more than the logo.

Depth, Air & Time

• How Deep Can You Scuba Dive? (Depth Limits by Certification) — Maximum depths for every level — from a first try-dive to technical diving — and why limits exist.
• How Long Does a Scuba Tank Last? — Why the same tank lasts 90 minutes on one dive and 30 on another — and how to make your air go further.
• How Long Can You Stay Underwater Scuba Diving? — Two limits decide your dive time: how much air you have, and how much nitrogen your body can absorb.
• How Many Dives Can You Do in One Day? — Most divers do 2–4 dives a day. Here's what actually limits the number — and how to do more safely.

Safety

• Is Scuba Diving Dangerous? How Safe Is It Really? — An honest look at the risks — and why training, not luck, is what keeps divers safe.
• What Happens If You Run Out of Air Scuba Diving? — It almost never happens — and when it does, there's a simple, practised procedure to handle it.
• Can You Fly After Scuba Diving? (How Long to Wait) — Not right away. Here are the surface-interval guidelines that keep you safe from decompression sickness.
• Can You Scuba Dive With a Medical Condition? — Sometimes yes, sometimes no — it depends on the condition. Here's how the medical clearance process works.
• Types of Ocean Currents (and How to Dive Them Safely) — The currents divers encounter, what they do, and exactly how to handle each one.
• What Is Decompression Sickness (The Bends)? — What the bends actually is, why it happens, how divers avoid it, and what to do if you ever suspect it.
• What Is a Safety Stop and Why Does It Matter? — The three-minute pause at the end of almost every dive, what it does, and how it differs from a decompression stop.
• How to Avoid Seasickness on a Dive Boat — Practical, diver-tested ways to stop seasickness ruining your day on the boat, before, during and after the crossing.

First-Timer Questions

• Do You Need to Know How to Swim to Scuba Dive? — To try diving, no. To get certified, yes — here's the difference and what's actually required.
• Will Sharks Attack You When Scuba Diving? — The honest, reassuring answer backed by statistics: scuba divers are remarkably safe — and sharks are usually more scared of you.
• Will I Get Claustrophobic Scuba Diving? — Most people find diving liberating, not confining. Here's why — and how to handle nerves on your first dive.
• What Happens to Your Ears Underwater? (Equalizing Explained) — Pressure builds on your eardrums as you descend — here's how to equalize early, often, and pain-free.
• Can You Wear Glasses or Contact Lenses Scuba Diving? — You can't wear glasses under a mask — but prescription masks and soft contact lenses both solve it beautifully.
• Snorkeling vs Scuba Diving: What's the Difference? — Both let you explore the underwater world — but one keeps you at the surface, and one takes you right into it.
• Scuba Diving vs Freediving: What's the Difference? — One lets you breathe underwater like magic, the other strips it all back to a single breath. Here's how they compare, and which to try.
• Can Kids and Older Adults Scuba Dive? (Age Limits Explained) — How young you can start, whether there's an upper age limit, and what really matters more than the number on your birthday.

Destinations

• Best Scuba Diving Destinations in the World (2026) — The bucket-list dive spots worth crossing the planet for, plus the easiest places to start as a brand-new diver.

Gear & Skills

• What Is Nitrox (Enriched Air) Diving? — The blue-banded tanks you see on dive boats, what enriched air actually does for you, and what it doesn't.
• What to Wear Scuba Diving (Wetsuit Thickness by Water Temperature) — From a rash guard in the tropics to a drysuit in the cold, here's how to pick exposure protection that keeps you warm and comfortable.
• What Is a Dive Computer and Do You Need One? — The single most useful piece of safety gear you can own, what it does, and whether a beginner really needs one.

How Much Weight Do You Need for Scuba Diving?