Great Blue Hole rim
Belize · 12–30 m rec. · variable · Nov–Jun drier
UNESCO sinkhole; recreational dives stay on the rim. The deep interior is not a holiday OW dive.
Darker cells mean a higher score for this topic on that metric.
Accessibility44
Skill ceiling66
Gear load80
Risk58
Seasonality46
Wow factor82
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.
These are well-known recreational sites with typical depth bands. They are not a booking or a vis report.
A house reef with a hover is a better first year than a famous name in a current.
Points
SS Thistlegorm exterior
Red Sea, Egypt · 16–30 m · often 15–30 m · year-round, wind
A 1941 wreck; penetration belongs in the wreck chapter.
Blue Corner
Palau · 5–30 m · often 20–40 m · Nov–May common
Current, sharks, reef hooks. See Palau.
Cape Kri
Raja Ampat, ID · 5–25 m · often 15–30 m · Oct–Apr common
A 2012 fish-count celebrity reef. See Raja Ampat.
Manta Point / Hanifaru
Maldives · 8–20 m · seasonal plankton · May–Nov peak
Baa Atoll UNESCO biosphere. See Maldives.
Monterey Breakwater
California, USA · 6–12 m · often 3–10 m · year-round kelp
A cold class-site kelp dive — recreational scuba is not only tropical.
Poor Knights Islands
New Zealand · 8–25 m · often 15–30 m · Feb–Apr warmest
A protected subtropical reserve Cousteau praised.
Sodwana Bay
South Africa · 12–30 m · variable · May–Sep popular
A continental African reef with seasonal whale sharks.
Tips
- House reef first — Fifty boring dives beat one famous current.
- Say the turn plan out loud — If the guide shrugs, pick another guide.
- Nitrox is not extra depth — It is often extra no-stop time.
- Log honestly — Future self is the audience.
Famous names are a later prize. The sport is a sand patch and a conservative computer.