Darker cells mean a higher score for this topic on that metric.
LessMore
Last reviewed Sources & creditsMedia creditsMethodology
Quick answers
Which local rescue or training agency should I check first?
Use the local lens: coastguard/federation norms and the shop briefing for that bay — not a blog visibility claim.
What is a typical first depth limit?
Many Open Water cards are written to 18 m. Further training raises that toward 30–40 m inside recreational no-stop diving.
Who invented the Aqua-Lung?
Emile Gagnan and Jacques Cousteau’s 1943 demand regulator is the usual origin of open-circuit scuba.
Is Nitrox required?
No. Enriched air is a common extra course. Air remains the default.
Can people stop after a course?
Yes. Skills decay. A checkout after a layoff is normal.
What does recreational exclude?
Planned decompression, overhead wreck or cave penetration, and untrained solo diving.
The industry sells eLearning and travel. The ocean sells bleaching and park tickets.
The outlook is fewer trophy depths and more house-reef craft.
Trends
- eLearning Open Water — Less classroom, same ocean.
- Travel wings and sidemount — Style, sometimes sense.
- Park permits — The new normal.
- Older and women divers — The shop is not only 22-year-old men.
- Computer dependence — Fine if a slate plan still exists.
Conservation
- Bleaching — The background emergency.
- Dive-boat sewage and anchors — The industry’s own mess.
- Touching and sunscreen — See reef-etiquette.
- Shark-baiting debates — Tourism ethics.
Access
- Course price vs local wages — Who gets to look at their own reef.
- Disability scuba programmes — Real, small, worth copying.
- Language of briefings — A safety issue.
- Medical gatekeeping — Necessary and sometimes uneven.
Outlook
- Cards will stay — The photographed ocean may not.
- Guides over gadgets — The useful future.
- This atlas is not a shop — On purpose.
Recreational scuba’s future is a conservative house reef. The agency logo is already finished.