

Best for advanced divers, 3-20m, boat entry, strong current.
Ulong Channel is a high-energy drift dive located in the Rock Islands of Palau. This reef passage features a wall ranging from 3 to 20 metres in depth, with an average of 10 metres. Divers experience strong currents that funnel through the channel, requiring advanced buoyancy control to navigate safely past sharp coral formations and overhead structures. Visibility typically ranges between 15 and 30 metres. Access is by boat only, and the site is best suited for experienced divers capable of managing significant water movement. Divers should coordinate exit points with their boat crew prior to entry to account for the swift flow.
7.28344, 134.24468
If visiting during a surface interval, ask your guide to show you the trail to the ancient Palauan petroglyphs on the cliffs of Ulong Island.
Located 15 miles west of Koror, accessible by a 30-40 minute speedboat ride.
Recorded at this site
Depth
3-20m
Visibility
15-30m
Skill Level
Advanced
Entry
Boat
Boat required
Water Temp
28-30°C
Current
Strong
Typical Dive
60 min
Best Time
Jan, Feb, Mar, Apr, May, Jun, Jul, Nov, Dec
No, this site is rated for advanced divers due to the strong currents and the requirement for precise buoyancy control near sharp coral.
The site features a wall that ranges from 3 to 20 metres, with an average depth of 10 metres.
Ulong Channel is a boat-only dive site located 24 kilometres from shore.
Divers must be aware of strong currents, potential entanglement, overhead environments, and sharp coral formations.
This site is designated as a drift dive for scuba divers and is not suitable for snorkelling due to the strong currents and depth profile.
Diving at Ulong Channel in Koror requires the following certifications: Advanced Open Water. Always dive within your training limits.
A rashguard or 2mm shorty is recommended for diving at Ulong Channel in Koror. Water temperatures range from 28°C to 30°C.
The best months to visit Ulong Channel in Koror are January, February, March, April, May, June, July, November, and December. Conditions outside these months can still be good but are less predictable.
Ulong Channel in Koror can have strong currents. Advanced experience with drift diving and current navigation is recommended.
Visibility at Ulong Channel in Koror typically ranges from 15 metres to 30 metres. Conditions vary with weather, tides, and seasons.