Octagon Reef
Protected Area
Bali Barat
Why dive here
With 515+ marine species recorded in the area - including barracuda, blue-spotted stingrays, bull sharks, giant moray eels and manta rays - Octagon Reef offers some of Bali's richest wreck diving. Water ranges 29-31°C, warmest April, May, November.
Octagon Reef, just a quick hop from Naya Gawana, makes for a really solid, easy dive. We love that it’s usually a relaxed drift along the wall, which gently slopes from about 5 metres down to 20. The current here tends to be light to medium, just enough to carry you along without much effort, making it ideal for a leisurely look. The wall itself is a tapestry of table corals and various staghorn species, and you'll spot plenty of damselfish and triggerfish darting in and out. Keep an eye out for broadband flatheads tucked into the sand patches at the base. We’ve had some good luck with banded sea kraits here, too, usually cruising along the reef edge. Visibility hovers around 16 metres on an average day, giving you a clear view of the reef's contours and the occasional eagle ray gliding past in the blue. It’s a site that rewards a slow pace, letting you soak in the details rather than chasing big pelagics.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Nearest Dive Centres to Octagon Reef
Dive shops near Octagon Reef
Extra Divers Naya Gawana-Bali
Nemo Diving
Easy Divers Bali
Bali Ocean Reef Dive Center
Masta Snorkeling
Bali Diving Academy Pemuteran
Reviews for Octagon Reef
Conditions
Ocean conditions, forecast and tides for Octagon Reef
Octagon Reef Ocean Conditions
Monthly averages for Octagon Reef, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-7.5, 113.18) (20km away)
October Averages
Sea Temperature
30°C
86°F · Range: 28.3–31.6°C
Current Speed
4 cm/s
Direction: E (90°)
Salinity
32.94 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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