Aldermens-Middle Middle - Goat Island & Hauraki Gulf
Middle Middle, tucked into the Alderman Islands, really stands out for us. It’s not about huge pelagics here, though a yellowtail or even a shortfin mako might cruise by if you’re lucky. What we love are those deep, grassy gullies. Drop down and you’re enveloped in a muted green, sunlight filtering through the kelp canopy above. It feels ancient, like a secret garden. Keep an eye out for crayfish tucked into the crevices, their antennae waving. We often spot banded morwong or the tiny, curious triplefins darting through the “grass,” which is actually a type of macroalgae. Visibility averages 14m, sometimes better, offering clear views into the topography. This site is ideal for photographers looking for something a bit different, and anyone who appreciates a tranquil, scenic dive rather than high-octane action. It’s a place to slow down and observe.
- Location
- Goat Island & Hauraki Gulf, New Zealand, Australasia
- Coordinates
- -36.956000, 176.081500
- Type
- reef
Marine Protected Area: Wharekawa Harbour Wildlife Refuge
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
- 4 mile reef (reef)
- 4 mile reef (reef)
- Acacia Bay (reef)
- Acacia Bay (reef)
- Aldermens- Bishops Hat (cave)
- Aldermens- Bishops Hat (reef)
- Aldermens- Fish Factory (wall)
- Aldermens- Fish Factory (pinnacle)
- Aldermens- HoneyComb (cave)
- Aldermens- HoneyComb (reef)
- Aldermens-Middle Middle (wreck)
- Aldermens- Mooring Bay (wall)
- Aldermens- Mooring Bay (reef)
- Anemone Boulders (reef)
- Anemone Boulders (reef)
Nearest Dive Centres to Aldermens-Middle Middle
- Cathedral Cove Dive Ltd - ["PADI"]
- Dive Doctor
- Dive HQ Auckland - ["PADI"]
- Dive Tatapouri
- Dive Zone Tauranga - ["PADI"]
- Dive Zone Whitianga - ["PADI"]
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
- Snapper (Pagrus auratus) - Reef Fish
- Short-beaked Common Dolphin (Delphinus delphis) - Whales & Dolphins
- European fan-worm (Sabella spallanzanii) - Worms
- Asian paddle crab (Charybdis (Charybdis) japonica) - Crabs & Lobsters
- Red Rock Lobster (Jasus edwardsii) - Crabs & Lobsters
- Smooth hammerhead (Sphyrna zygaena) - Sharks & Rays
- Bluefin Gurnard (Chelidonichthys kumu) - Reef Fish
- Bronze whaler (Carcharhinus brachyurus) - Sharks & Rays
- dory (Zeus faber) - Reef Fish
- California Yellowtail (Seriola lalandi) - Reef Fish
- Blue mackerel (Scomber australasicus) - Reef Fish
- Cowfish (Tursiops truncatus) - Whales & Dolphins
- Ranger (Pseudocaranx dentex) - Reef Fish
- Pacific sardine (Sardinops sagax) - Reef Fish
- Rig (Mustelus lenticulatus) - Sharks & Rays
- Dab (Rhombosolea plebeia) - Reef Fish
- Spotted Stargazer (Genyagnus monopterygius) - Reef Fish
- Carpet sea squirt (Didemnum vexillum)
- Southern Eagle Ray (Myliobatis tenuicaudatus) - Sharks & Rays
- Bryde's whale (Balaenoptera brydei) - Whales & Dolphins
Recommended Packing List for Aldermens-Middle Middle
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