The Sisters - Kaikōura

Darwin Island isn’t just a dive site, it’s a full-throttle marine spectacle. Even without the Arch, the seamount is pure magic. We’ve drifted this spot countless times, and the sheer volume of big animals always resets our expectations. Picture this: you descend into a solid wall of schooling hammerheads, hundreds of them, their silhouettes against the blue. Then a giant comes into view, perhaps a whale shark gliding past, unhurried, just doing its thing from June to November. The currents here are no joke, a constant, powerful push, but that’s precisely why the big pelagics congregate. We’re talking Allison’s tuna zipping by, inquisitive short-beaked common dolphins, and manta rays soaring overhead. It’s an advanced dive, certainly, one for those comfortable in washing machine conditions, but the reward is immense. We always keep an eye out for the smaller stuff too, like the psychedelic blue trim parrotfish darting through the coral patches, or the shy flowery flounder camouflaged on the sand. It’s raw, it’s wild, and honestly, we think it’s one of the best places on earth to truly feel connected to the ocean’s power.

Location
Kaikōura, New Zealand, Australasia
Coordinates
-42.463100, 173.563700
Type
drift

Marine Protected Area: Rileys Lookout

Best Time to Dive in Kaikōura

The warmest water temperatures in Kaikōura occur in February, averaging 18.4°C. The coolest conditions are in September at 13.3°C.

Monthly Water Temperatures

  • January: 18.1°C
  • February: 18.4°C
  • March: 18.1°C
  • April: 17.0°C
  • May: 15.8°C
  • June: 14.6°C
  • July: 13.9°C
  • August: 13.5°C
  • September: 13.3°C
  • October: 13.7°C
  • November: 15.1°C
  • December: 16.9°C

Nearby Dive Sites in Kaikōura

Nearest Dive Centres to The Sisters

Marine Life in Kaikōura

Home to 37 recorded species including 16 reef fish, 8 sharks & rays, 4 other, 2 sea urchins, 2 hard corals, 2 whales & dolphins.

Notable Species

Recommended Packing List for The Sisters

Based on average water temperature of 15.7°C, currents 18 cm/s.

  • Wetsuit (5-7mm) - recommended for 16°C water
  • Hood & Gloves (3-5mm) - helps retain warmth
  • 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