Best for advanced divers, 15-35m, boat entry, strong current.
Hammerhead Rock is a demanding wall and drift dive site off Yonaguni Island, Japan, suited exclusively for advanced divers. The site features a wall ranging from 15 to 35 metres in depth, where strong currents are common. Visibility is high, typically between 30 and 50 metres. Access is by boat only, and divers must remain close to their guide and the vessel due to the unpredictable nature of the currents. The site supports a variety of marine life typical of the region, including reef fish and invertebrates that congregate along the wall face. Divers should carry an SMB at all times.
24.44880, 122.92850
Do not chase the hammerhead sharks; follow the guide's order, keep distance, and wait for them to come to you.
Access is via speedboat.
Recorded at this site
Depth
15-35m
Visibility
30-50m
Skill Level
Advanced
Entry
Boat
Boat required
Water Temp
24-29°C
Current
Strong
Best Time
Jan, Feb, Mar, Apr, May, Dec
The site supports a range of marine life typical of the region, including various reef fish and invertebrates that inhabit the wall environment.
No, Hammerhead Rock is designed for advanced divers due to the strong currents and deep wall topography.
The site is a wall dive that ranges from 15 to 35 metres in depth.
This is a boat-only dive site; a boat is required for access.
No, this is a deep wall and drift dive site intended for scuba divers.
Diving at Hammerhead Rock in Yonaguni requires the following certifications: Advanced Open Water, 150 Logged Dives. Always dive within your training limits.
A 3mm wetsuit is recommended for diving at Hammerhead Rock in Yonaguni. Water temperatures range from 24°C to 29°C.
The best months to visit Hammerhead Rock in Yonaguni are January, February, March, April, May, and December. Conditions outside these months can still be good but are less predictable.
Hammerhead Rock in Yonaguni can have strong currents. Advanced experience with drift diving and current navigation is recommended.
Visibility at Hammerhead Rock in Yonaguni typically ranges from 30 metres to 50 metres. Conditions vary with weather, tides, and seasons.
