Tawharanui - Goat Island & Hauraki Gulf

Whangamumu Reef is one of those spots in the Bay of Islands that feels a bit like a secret. It’s not about dramatic drop-offs, but more about the sheer number of fish swirling around you. We love the feeling of being completely enveloped by schools of demoiselles and maomao; sometimes they’re so thick the light gets dappled. The top of the reef sits at about 10 meters, and it’s a lively place, gently sloping to 14 meters before hitting kelp-covered boulders. Keep an eye out for snapper patrolling through the kelp, and we’ve often spotted eastern king wrasse darting between crevices. Our favourite thing about Whangamumu is poking around the small caves in the shallows; they’re often home to red and packhorse crayfish, sometimes a moray eel peering out. Visibility here hovers around 7 meters, so it’s not about seeing huge distances, but rather the close-up, busy action right in front of you. This is a great dive for anyone who enjoys a relaxed pace and wants to feel truly immersed in a shoal of fish.

Location
Goat Island & Hauraki Gulf, New Zealand, Australasia
Coordinates
-36.364500, 174.836400
Type
reef

Marine Protected Area: Tawharanui

Best Time to Dive in Goat Island & Hauraki Gulf

The warmest water temperatures in Goat Island & Hauraki Gulf occur in February, averaging 22.4°C. The coolest conditions are in August at 14.1°C.

Monthly Water Temperatures

  • January: 21.4°C
  • February: 22.4°C
  • March: 21.8°C
  • April: 19.8°C
  • May: 17.4°C
  • June: 15.3°C
  • July: 14.1°C
  • August: 14.1°C
  • September: 14.7°C
  • October: 16.3°C
  • November: 18.5°C
  • December: 20.3°C

Nearby Dive Sites in Goat Island & Hauraki Gulf

Nearest Dive Centres to Tawharanui

Marine Life in Goat Island & Hauraki Gulf

Home to 77 recorded species including 43 reef fish, 11 sharks & rays, 3 whales & dolphins, 3 crabs & lobsters, 3 other, 3 sea snails & nudibranchs.

Notable Species

Recommended Packing List for Tawharanui

Based on average water temperature of 18.0°C, currents 2 cm/s.

  • Wetsuit (3-5mm) - comfortable for 18°C water
  • 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 are the typical diving depths at Tawharanui Marine Reserve?
At Tawharanui Marine Reserve, the best diving is typically found in the 10-15 meter range. However, the maximum depth recorded for the site is 12 meters. Divers can plan their dives accordingly within these depths.
What kind of marine life can divers expect to see when diving at Tawharanui?
Divers at Tawharanui Marine Reserve can expect to encounter a variety of fascinating marine life. You might spot large Eagle and Sting Rays, Snapper, Kingfish, Flounder, and Goat Fish. Additionally, towards the Takatu Point end of the reserve, large Crayfish are often seen, adding to the rich biodiversity of this New Zealand dive site.
Is Tawharanui Marine Reserve suitable for beginner divers, or is it considered a more challenging dive site?
Tawharanui Marine Reserve is classified as an intermediate difficulty dive site. This suggests it is more suitable for divers who have some experience beyond entry-level certification. Beginner divers might find certain conditions or aspects of the dive more challenging.
What is the best time of year to go diving at Tawharanui for optimal conditions?
The provided data does not specify the best time of year for optimal diving conditions at Tawharanui Marine Reserve. For general guidance on seasonal diving, you can explore our When to Dive section, but specific seasonal recommendations for Tawharanui are not available in the current information.
What dive certifications are required to dive at Tawharanui Marine Reserve?
The provided information does not specify the exact dive certifications required to dive at Tawharanui Marine Reserve. Given its intermediate difficulty, it is generally recommended that divers hold at least an Advanced Open Water certification or equivalent, but specific requirements should always be confirmed with local dive operators.
What are the typical water conditions and currents like for diving at Tawharanui?
At Tawharanui Marine Reserve, the average visibility is approximately 6 meters. The provided data does not include specific information regarding typical water temperatures or current conditions at the site. Divers should always check local conditions before planning their dive.