

Best for intermediate divers, 8-30m, boat entry, moderate current.
Outer Rock is a reef and wall dive site off Great Keppel Island, featuring a shallow reef system that transitions into a wall dropping to 30 metres. The topography consists of a mix of encrusting, plate, and branching corals. Divers should be prepared for moderate currents that can strengthen unpredictably, requiring good buoyancy control. The site is accessible only by boat. Due to the depth and current, it is suited for intermediate divers. Hazards include sharp coral, strong currents, and the presence of sharks. Visibility is variable, and local current predictions should be checked prior to arrival to time dives with slack water.
-23.06228, 150.95241
Time your dive to hit slack water around the current changes, as the moderate current can surge without much warning and sharp coral makes uncontrolled drift uncomfortable. Check locally for up-to-date current predictions before heading out.
The site is accessible by boat, with a boat ramp available at Turkey Beach. It is located 48 kilometres offshore from Seventeen Seventy.
Recorded at this site
Depth
8-30m
Skill Level
Intermediate
Entry
Boat
Boat required
Water Temp
20-28°C
Current
Moderate
Best Time
May, Aug
Divers at Outer Rock regularly encounter wrasse, blue barred parrotfish, schools of fusiliers, turtles, reef sharks, and reef manta rays.
No, Outer Rock is rated for intermediate divers due to the moderate, unpredictable currents and the depth of the wall.
The site ranges from 8 to 30 metres, with an average depth of 22 metres.
Outer Rock is a boat-only dive site.
May and August offer the most reliable conditions for diving at this site.
Diving at Outer Rock in Seventeen Seventy requires the following certifications: Open Water. Always dive within your training limits.
A 3mm wetsuit is recommended for diving at Outer Rock in Seventeen Seventy. Water temperatures range from 20°C to 28°C.
Divers at Outer Rock in Seventeen Seventy should be aware of sharks. These encounters are generally rare and avoidable with proper awareness. Follow local safety guidance and maintain a respectful distance from all marine life.
Expect moderate currents at Outer Rock in Seventeen Seventy. Good buoyancy control and some drift diving experience is helpful.