Secret Spot - Iron Bottom Sound

The Passage, tucked between Gam and Waigeo, really feels like diving a river. It’s a canyon, usually with a decent current, which makes for a thrilling drift. We’ve spotted scribbled angelfish darting among the coral, and if you look close, you might find a Denise’s pygmy seahorse clinging to a fan. It’s a shallower dive, topping out around 17m, perfect for those who enjoy a lively drift and have an eye for the smaller stuff. Visibility averages 14m, good enough to take in the movement.

Location
Iron Bottom Sound, Solomon Islands, Central & South Pacific
Coordinates
-8.361400, 157.318300
Type
drift
Maximum Depth
15-40m

Marine Protected Area: Nusa Roviana

Best Time to Dive in Iron Bottom Sound

The warmest water temperatures in Iron Bottom Sound occur in January, averaging 30.5°C. The coolest conditions are in December at 30.5°C.

Monthly Water Temperatures

  • January: 30.5°C (air: 26.9°C)
  • February: 30.5°C (air: 26.7°C)
  • March: 30.5°C (air: 26.7°C)
  • April: 30.5°C (air: 26.8°C)
  • May: 30.5°C (air: 26.9°C)
  • June: 30.5°C (air: 26.5°C)
  • July: 30.5°C (air: 26.5°C)
  • August: 30.5°C (air: 26.3°C)
  • September: 30.5°C (air: 26.5°C)
  • October: 30.5°C (air: 26.7°C)
  • November: 30.5°C (air: 26.7°C)
  • December: 30.5°C (air: 26.9°C)

Nearby Dive Sites in Iron Bottom Sound

Nearest Dive Centres to Secret Spot

Marine Life in Iron Bottom Sound

Home to 415 recorded species including 320 reef fish, 29 hard corals, 18 sea snails & nudibranchs, 16 sea cucumbers, 7 seagrass & algae, 5 clams & mussels.

Notable Species

Recommended Packing List for Secret Spot

Based on average water temperature of 30.5°C.

  • Shorty or Rashguard - warm 30°C water needs minimal exposure protection
  • Mask - essential for every dive
  • Fins
  • BCD - buoyancy compensator
  • Regulator - your most safety-critical piece of gear
  • Dive Computer - tracks depth, time, and NDL
  • Surface Marker Buoy (SMB) - essential for boat pickups
  • Dive Torch - useful for crevices and colour at depth
  • Underwater Camera - capture your diving memories

Frequently Asked Questions

What is the maximum depth for recreational diving at Secret Spot in Gizo, Solomon Islands?
The maximum depth for recreational diving at Secret Spot in the Solomon Islands is 20 meters. This makes it accessible for divers with standard certifications, allowing for a comprehensive exploration of its healthy reef.
What kind of unique marine life and underwater topography can divers expect to encounter at Secret Spot, Gizo?
Secret Spot offers a sensational wall dive, where a healthy reef drops off to several hundred meters into the deep blue waters of the Solomon Sea. Divers can expect to encounter an abundance of pelagic action, including Barracuda, Spanish Mackerel, and Trevally, along with sightings of reef sharks and eagle rays. For more on marine life, visit our wildlife database.
How challenging is the Secret Spot dive site in Gizo, especially for divers with varying experience levels?
Secret Spot is classified as an intermediate dive site. It is occasionally prone to a bit of current, which makes it an ideal slow drift dive. Divers should be comfortable with drift diving techniques to fully enjoy the experience.
What is the best time of year to dive Secret Spot in Gizo for optimal conditions and marine life sightings?
The provided data for Secret Spot does not specify a particular best time of year for optimal conditions or marine life sightings. For general information on seasonal diving in the region, we recommend checking our When to Dive guide.
What scuba diving certifications are typically required or recommended to dive Secret Spot in Gizo, Solomon Islands?
Given its maximum recreational depth of 20 meters and intermediate difficulty due to occasional currents, a PADI Open Water Diver or equivalent certification is typically required for Secret Spot. However, experience with drift diving or an Advanced Open Water certification would enhance comfort and enjoyment.
What are the typical current conditions and visibility like at Secret Spot in Gizo, Solomon Islands?
At Secret Spot, divers can expect occasional currents, which make it an ideal slow drift dive. The average visibility at this site is excellent, typically around 19 meters, offering clear views of the stunning wall and marine life.