
Rainbow Passage
Tufi · Papua New Guinea
A narrow channel between two fjord walls where tidal flow accelerates and concentrates fish life into a dense, colourful spectacle. Schooling anthias, fusiliers, and glassfish fill the water column while giant grouper and dogtooth tuna patrol the current lines. The passage walls are encrusted with basket sponges, wire coral, and massive sea fans rivalling anything in the Coral Triangle.
Conditions
Depth
5 to 35 m
Advanced depths
Current
Can be moderate
Can pick up on the edge
Visibility
18 to 30 m
Clearest in the calm season
Water
26 to 30°C
3mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 28 | 28 | 28 | 28 | 27 | 26 | 26 | 26 | 26 | 27 | 28 | 28 |
| Vis (m) | 12 | 12 | 12 | 12 | 15 | 15 | 18 | 18 | 15 | 15 | 12 | 12 |
| Current | Gentle | Gentle | Gentle | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Gentle | Gentle | Gentle |
Your chances of seeing each animal
Dogtooth Tuna
Last confirmed Apr 4, 2026 · 1 records
Likely
About 6 in 10 dives
Red-tooth Triggerfish
Last confirmed Nov 24, 2025 · 1 records
Likely
About 6 in 10 dives
Bigeye Trevally
Last confirmed Nov 29, 2025 · 6 records
Likely
About 6 in 10 dives
Bumphead Parrotfish
Last confirmed Nov 29, 2025 · 1 records
Sometimes
About 1 in 3 dives
Orangespine Unicornfish
Expected
Known here, not yet in recent logs
Giant Grouper
Expected
Known here, not yet in recent logs
Wire Coral
Expected
Known here, not yet in recent logs
Sea Fan
Expected
Known here, not yet in recent logs
Gear