Sound of Mull vs Scapa Flow — Barrel of Butter — Dive Destination Comparison
Sound of Mull (United Kingdom) scores 60.2/100 vs Scapa Flow — Barrel of Butter's 56.9/100 in OkToDive's 12-category rating. Choose Sound of Mull for wreck diving with 5–15m visibility. Choose Scapa Flow — Barrel of Butter for reef diving at ~$90/dive.
Last updated: 2026-07-22
Side-by-side comparison
| Metric | Sound of Mull | Scapa Flow — Barrel of Butter |
|---|---|---|
| OkToDive Score | 60.2/100 | 56.9/100 |
| Country | United Kingdom | United Kingdom |
| Visibility | 5--15m | 6--18m |
| Water temp | 7--14 C | 6--13 C |
| Max depth | 35m | 22m |
| Current | moderate | moderate |
| Cost per 2-tank dive | $95 | $90 |
| Budget tier | mid range | mid range |
| Best months | May, June, July | May, June, July |
| Dive types | wreck, reef, wall | reef, wall, scenic |
| Min certification | Advanced Open Water | Open Water |
| Key species | spiny lobster, conger eel, velvet swimming crab | dahlia anemone, wolf fish, ballan wrasse |
| Google rating | 4.5 (180 reviews) | 4.6 (95 reviews) |
Which should you choose?
Choose Sound of Mull when...
- + Wreck diving enthusiasts
- + Anyone visiting Europe for the first time
- + Groups seeking 20+ named dive sites in one area
Skip if
- - You don't have Advanced certification
- - You hate cold water — temps drop to 7°C
Choose Scapa Flow — Barrel of Butter when...
- + Divers who prioritize reef diving
- + Anyone visiting Europe for the first time
- + Groups seeking 8+ named dive sites in one area
Skip if
- - You hate cold water — temps drop to 6°C
- - You need shore access — this is boat-only
Bottom line
Sound of Mull wins on overall score (60.2 vs 56.9), but the right choice depends on your priorities. Scapa Flow — Barrel of Butter is more affordable ($90 vs $95/dive). Scapa Flow — Barrel of Butter has better peak visibility (18m vs 15m).