
Avana Passage Rarotonga
Rarotonga, Cook Islands · Cook Islands
The main oceanic channel on Rarotonga's eastern coast concentrates current-riding grey reef sharks and schools of pelagic fish in a narrow corridor between the lagoon and the open sea. Drift timing matters here — the outgoing tide pushes divers through the passage with minimal effort while sharks work the upwelling edges for an effortless front-row view.
Conditions
Depth
8 to 30 m
Open water and up
Current
Can be moderate
Can pick up on the edge
Visibility
20 to 30 m
Clearest in the calm season
Water
23 to 29°C
3mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 27 | 27 | 27 | 26 | 25 | 24 | 23 | 23 | 23 | 24 | 25 | 26 |
| Vis (m) | 15 | 15 | 15 | 15 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 15 |
| Current | Strong | Strong | Moderate | Moderate | Moderate | Moderate | Moderate | Strong | Strong | Strong | Strong | Strong |
Your chances of seeing each animal
Sunset Wrasse
Last confirmed Jan 28, 2026 · 66 records
Almost always
Nearly every dive
Threadfin Butterflyfish
Last confirmed Jan 25, 2026 · 49 records
Almost always
Nearly every dive
Lagoon Triggerfish
Last confirmed Mar 28, 2026 · 54 records
Almost always
Nearly every dive
Convict Surgeonfish
Last confirmed Feb 2, 2026 · 66 records
Almost always
Nearly every dive
Blue Linckia
Last confirmed Jan 25, 2026 · 36 records
Very likely
Most dives
Grey reef shark
Expected
Known here, not yet in recent logs
Bumphead parrotfish
Expected
Known here, not yet in recent logs
Yellowfin tuna
Expected
Known here, not yet in recent logs
Gear