West Passage Wall
German Channel · Palau
A sweeping vertical wall on the western approach to German Channel that drops from 10 meters to beyond recreational limits, draped in enormous sea fans, black coral trees, and barrel sponges. The wall faces open ocean and intercepts strong tidal currents, making it one of the most productive pelagic corridors in Palau. Oceanic whitetip sharks are occasional visitors, and grey reef sharks patrol the wall edge in the permanent thermocline where warm surface water meets the cooler oceanic column.
Conditions
Depth
10 to 50 m
Advanced depths
Current
Can be moderate
Can pick up on the edge
Visibility
15 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) | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 26 | 26 | 27 | 27 |
| Vis (m) | 20 | 20 | 20 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 20 | 20 |
| Current | Strong | Strong | Strong | Moderate | Moderate | Moderate | Moderate | Moderate | Strong | Strong | Strong | Strong |
Your chances of seeing each animal
Grey Reef Shark
Last confirmed May 30, 2026 · 53 records
Almost always
Nearly every dive
Humphead Wrasse
Last confirmed Jun 8, 2026 · 34 records
Very likely
Most dives
Giant Trevally
Last confirmed Sep 5, 2025 · 2 records
Likely
About 6 in 10 dives
Sea Fan (Giant)
Last confirmed Apr 20, 2025 · 1 records
Likely
About 6 in 10 dives
Bluefin Trevally
Last confirmed Jun 8, 2026 · 12 records
Likely
About 6 in 10 dives
Barracuda (Great)
Last confirmed May 11, 2025 · 2 records
Sometimes
About 1 in 3 dives
Black Coral Tree
Expected
Known here, not yet in recent logs
Barrel Sponge
Expected
Known here, not yet in recent logs
Gear