Dry Tortugas vs Niihau — Dive Destination Comparison
Dry Tortugas (United States) scores 67.0/100 vs Niihau's 66.3/100 in OkToDive's 12-category rating. Choose Dry Tortugas for reef diving with 18–40m visibility. Choose Niihau for reef diving at ~$350/dive.
Last updated: 2026-07-22
Side-by-side comparison
| Metric | Dry Tortugas | Niihau |
|---|---|---|
| OkToDive Score | 67.0/100 | 66.3/100 |
| Country | United States | United States |
| Visibility | 18--40m | 20--50m |
| Water temp | 22--29 C | 22--27 C |
| Max depth | 30m | 40m |
| Current | moderate | strong |
| Cost per 2-tank dive | $180 | $350 |
| Budget tier | luxury | ultra luxury |
| Best months | April, May, June | May, June, July |
| Dive types | reef, wall, wreck | reef, wall, drift, cave |
| Min certification | Open Water | Advanced Open Water |
| Key species | goliath grouper, loggerhead turtle, nurse shark | Hawaiian monk seal, ulua (giant trevally), Galapagos shark |
| Google rating | 4.8 (220 reviews) | 4.9 (42 reviews) |
Which should you choose?
Choose Dry Tortugas when...
- + Wreck diving enthusiasts
- + Wide-angle photographers wanting crystal visibility
- + Groups seeking 15+ named dive sites in one area
Skip if
- - You're on a tight budget — avg $180/dive
- - You need shore access — this is boat-only
Choose Niihau when...
- + Marine life enthusiasts seeking Hawaiian monk seal encounters
- + Experienced drift divers comfortable in current
- + Wide-angle photographers wanting crystal visibility
Skip if
- - You're uncomfortable in strong currents
- - You don't have Advanced certification
- - You're on a tight budget — avg $350/dive
Bottom line
Dry Tortugas wins on overall score (67.0 vs 66.3), but the right choice depends on your priorities. Dry Tortugas is more affordable ($180 vs $350/dive). Niihau has better peak visibility (50m vs 40m).