Nosy Be vs Île Sainte-Marie — Dive Destination Comparison
Nosy Be (Madagascar) scores 65.9/100 vs Île Sainte-Marie's 59.9/100 in OkToDive's 12-category rating. Choose Nosy Be for reef diving with 9–30m visibility. Choose Île Sainte-Marie for reef diving at ~$80/dive.
Last updated: 2026-07-22
Side-by-side comparison
| Metric | Nosy Be | Île Sainte-Marie |
|---|---|---|
| OkToDive Score | 65.9/100 | 59.9/100 |
| Country | Madagascar | Madagascar |
| Visibility | 9--30m | 8--20m |
| Water temp | 24--28 C | 24--29 C |
| Max depth | 40m | 30m |
| Current | moderate | moderate |
| Cost per 2-tank dive | $65 | $80 |
| Budget tier | mid range | mid range |
| Best months | April, May, September | July, August, September |
| Dive types | reef, pelagic | reef, wall, wreck |
| Min certification | Open Water | Open Water |
| Key species | manta ray, whale shark, reef shark | humpback whale, whale shark, dugong |
| Google rating | 0 (0 reviews) | 4.4 (42 reviews) |
Which should you choose?
Choose Nosy Be when...
- + Divers who prioritize reef diving
- + Anyone visiting Indian Ocean for the first time
- + Groups seeking 20+ named dive sites in one area
Skip if
- - You don't have Advanced certification
- - You need shore access — this is boat-only
Choose Île Sainte-Marie when...
- + Wreck diving enthusiasts
- + Anyone visiting Indian Ocean for the first time
- + Groups seeking 10+ named dive sites in one area
Skip if
- - You prefer uncrowded sites and this has 10+ named spots drawing traffic
- - You need shore access — this is boat-only
Bottom line
Nosy Be wins on overall score (65.9 vs 59.9), but the right choice depends on your priorities. Nosy Be is more affordable ($65 vs $80/dive). Nosy Be has better peak visibility (30m vs 20m).