Blake's Wall – Rarotonga (North & West)
Site Overview
Blake's Wall is one of the most celebrated dive sites in Rarotonga (North & West), a steep wall similar to the southern sites, with large groupers, whitetip reef sharks and eagle rays. The site is defined by a steep outer-reef wall plunging into deep water, with ledges that host big groupers and a regular presence of whitetip reef sharks and eagle rays, creating a dramatic underwater landscape that rewards divers with every visit. The reef structure supports an exceptional variety of marine life, and visitors routinely encounter grouper, whitetip reef shark, eagle ray, gorgonian, turtle, trevally among the coral and open water. Water clarity in this part of the Cook Islands is frequently excellent, with visibility often extending well beyond twenty metres and a comfortably warm tropical temperature year-round. The combination of healthy hard and soft corals, nutrient-rich currents and protected lagoon systems makes Blake's Wall a reliable location for both macro photography and wide-angle pelagic encounters. Local dive operators run regular trips to the site from nearby bases, and the sheltered geography means conditions are suitable across a wide range of experience levels with appropriate guidance. Conservation is taken seriously throughout the Cook Islands, and Blake's Wall benefits from community-led marine protection that keeps fish stocks high and coral coverage dense. Divers who plan their visit around the calm dry-season months will find the most predictable conditions, though the site can be enjoyed throughout the year. Blake's Wall deserves a place on any serious South Pacific diving itinerary, offering a genuine taste of the untouched beauty that makes Cook Islands diving so highly regarded internationally.
Dive Briefing
"The dive at Blake's Wall begins with a controlled boat entry and a short ride from the nearest base, with the guide giving a full briefing on the site layout, expected marine life and emergency procedures. Descending along a steep outer-reef wall plunging into deep water, with ledges that host big groupers and a regular presence of whitetip reef sharks and eagle rays, divers are immediately surrounded by grouper, whitetip reef shark, eagle ray, gorgonian, turtle, trevally, with the reef structure revealing more detail the closer you look. The maximum depth reaches about 42 metres, while the average depth sits near 24 metres, so gas planning and a dive computer keep the profile safe and comfortable. Currents are described as moderate, and the guide chooses the entry time to make the most of slack or mild flow, using a reef hook or DSMB when needed. The wall topography offers natural swim-throughs and ledges that shelter larger animals, and the open water above the reef often holds cruising pelagics. Throughout the dive, neutral buoyancy protects the fragile coral, and the group stays close to the guide to manage depth and any surge. The safety stop is completed in open water on a DSMB, and the boat follows the bubbles to collect divers at the exit point for a relaxed return to base."
Signature Marine Life
grouper
Epinephelus sp.
Best: January, February, March
whitetip reef shark
Triaenodon obesus
Best: January, February, March
eagle ray
Aetobatus ocellatus
Best: May, June, July
gorgonian
Gorgonacea sp.
Best: January, February, March
turtle
Chelonioidea sp.
Best: January, February, March
trevally
Caranx sp.
Best: January, February, March
Safety & Hazards
- Moderate outer-reef current
- Depth beyond 40 m
- Surge on the wall
- Risk of narcosis
- Boat traffic
- Limited shelter in swell
Traveler Notes
Who is this for?
Blake's Wall is designed for advanced divers who want a memorable Cook Islands experience shaped by a steep outer-reef wall plunging into deep water, with ledges that host big groupers and a regular presence of whitetip reef sharks and eagle rays. The site requires Advanced Open Water certification, and the 4 key considerations are Steep wall with depth and Current on the outer reef, so good buoyancy and planning are important. Wide-angle photographers will enjoy the reef scale and passing pelagics, while macro enthusiasts find plenty of small life among the coral. It is a rewarding choice for travellers who appreciate healthy, protected reefs and a mix of calm lagoon and exhilarating outer-reef conditions. With the right guidance, the site delivers a genuine sense of the untouched South Pacific that keeps divers returning to the Cook Islands.
For Non-Divers
Avarua town, Beaches
Quick Stats
Dive Logistics
- Dive Rarotonga
- Rarotonga Bluewater
Photography Info
Best for: wide_angle
Nearby Stay
The Islander Hotel
Avarua • 5km away
Muri Beach Club Hotel
Muri • 5km away