Nanas Reef
Protected Area
KKP3K Pulau Sali, Gane Barat Utara
Why dive here
With 131+ marine species recorded in the area - including sea turtles, sperm whales and pufferfish - Nanas Reef offers some of Halmahera's richest reef diving. Water ranges 29-30°C, warmest April, May, December.
Nanas Reef is a solid afternoon dive, about 20 minutes from Nabucco Spice Island. It’s an isolated patch of coral in a sheltered bay, which means currents are usually pretty mellow, making it a good spot if you’re still building confidence. We’ve found the visibility here to be consistently good, often around 20-25 metres, letting you really appreciate the details. Keep an eye out for the smaller stuff – we’ve spotted Blackbelly Pygmygobies tucked into the coral, and Largemouth Triplefins often darting around. You’ll also usually see groups of batfish hanging out, and we’ve even had a few passing blacktip reef sharks cruise by. It’s a pleasant dive, not a massive adrenaline rush, but always interesting.
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Conditions
Ocean conditions, forecast and tides for Nanas Reef
Nanas Reef Ocean Conditions
Monthly averages for Nanas Reef, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-0.4, 127.72) (46km away)
October Averages
Sea Temperature
30°C
85°F · Range: 28.8–30.6°C
Current Speed
6.71 cm/s
Direction: NE (26.6°)
Chlorophyll-a
0.14 mg/m³
Clear water
Salinity
33.73 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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