Mary’s Wall - Poor Knights Islands

Photographer’s Reef truly earns its name. We love this site for its tight, intricate granite formations, creating endless opportunities to frame a shot. The reef top starts around 3m, dropping to a sandy bottom at 16m, and the whole place is a maze of high-profile boulders and outcrops. You’ll find deep overhangs and some lovely little swim-throughs here, perfect for exploring. The walls are plastered with strawberry anemones, their vibrant reds and oranges just popping in the South African light. Keep an eye out for nudibranchs tucked into every crevice; we’ve spotted some real beauties here. The deeper gullies are a good bet for shy sharks and the usual reef fish. Visibility averages 7m, which is standard for the area, and it really suits divers who enjoy a slower pace, poking around and observing the smaller details. If you're carrying a camera, this is absolutely one of our favourite spots for interesting compositions and macro life.

Location
Poor Knights Islands, New Zealand, Australasia
Coordinates
-35.477600, 174.736600
Type
reef

Marine Protected Area: Poor Knights Islands

Best Time to Dive in Poor Knights Islands

The warmest water temperatures in Poor Knights Islands occur in February, averaging 21.9°C. The coolest conditions are in August at 15.8°C.

Monthly Water Temperatures

  • January: 21.4°C
  • February: 21.9°C
  • March: 21.7°C
  • April: 20.6°C
  • May: 19.1°C
  • June: 17.6°C
  • July: 16.5°C
  • August: 15.8°C
  • September: 15.9°C
  • October: 16.6°C
  • November: 18.2°C
  • December: 19.8°C

Nearby Dive Sites in Poor Knights Islands

Nearest Dive Centres to Mary’s Wall

Marine Life in Poor Knights Islands

Home to 84 recorded species including 53 reef fish, 11 sharks & rays, 4 whales & dolphins, 4 other, 3 crabs & lobsters, 2 sea urchins.

Notable Species

Recommended Packing List for Mary’s Wall

Based on average water temperature of 18.8°C, currents 12 cm/s.

  • Wetsuit (3-5mm) - comfortable for 19°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 is the typical depth range for diving Mary's Wall in Roatan?
Mary's Wall is located in the Poor Knights Islands, New Zealand, not Roatan. This beautiful wall dive has a maximum depth of 18m, making it accessible for many divers. Its short but vibrant wall is a highlight of the New Zealand diving experience.
What kind of marine life and coral can divers expect to see at Mary's Wall?
Divers at Mary's Wall can expect to encounter a rich variety of marine life and encrusting organisms. The wall is beautifully covered with gorgonian fans and anemones, along with other diverse encrusting life. Keep an eye out for plenty of nudibranchs, and at the foot of the wall, you may spot large scorpion fish. For more details on marine species, visit our wildlife database.
How challenging is the Mary's Wall dive site, and what skill level is recommended for divers?
Mary's Wall is classified as an intermediate difficulty dive site. Divers should be comfortable with wall diving and have a good understanding of buoyancy control, especially to avoid disturbing the delicate gorgonian fans. This site offers a rewarding experience for those with a moderate level of diving skill.
When is the best time of year to dive Mary's Wall, considering weather and water conditions?
Information regarding the best time of year to dive Mary's Wall, including specific weather and water conditions, is not available in the provided data. For general guidance on dive seasons, please refer to our When to Dive section.
What diving certifications are required or highly recommended to dive Mary's Wall?
Specific diving certifications required or highly recommended for Mary's Wall are not detailed in the provided information. Given its intermediate difficulty, divers should possess at least an Open Water certification and ideally have some experience with wall dives. Always check with local dive operators for their specific requirements.
What are the typical current and surface conditions like at Mary's Wall dive site?
Details regarding the typical current and surface conditions at Mary's Wall dive site are not provided in the available data. Divers should always consult with local dive operators on the day of their dive for the most up-to-date information on conditions.