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Nature & Wildlife

Cook Islands Snorkelling

  • 3 minutes

Cook Islands

Nestled in the heart of the South Pacific, the Cook Islands is a tropical paradise that boasts crystal-clear waters, beautiful white sand beaches, vivid coral reefs, and abundant marine life. With over 15 islands to explore, each with its own unique charm, the Cook Islands offer some of the best snorkelling opportunities in the world.

From swimming with colourful fish, reef sharks, and sea turtles to discovering hidden underwater caves and shipwrecks, the Cook Islands has something to offer for every snorkelling enthusiast.

So grab your snorkelling gear, and discover the best places to snorkel in the Cook Islands.

Snorkel Cook Islands, New Zealand
Snorkel Cook Islands, New Zealand

Tips to Snorkel in The Cook Islands

Here are a few tips that one must consider before snorkelling in the Cook Islands.

  • Always snorkel with someone else for safety reasons.
  • Hire snorkelling gear for a safe snorkelling experience.
  • Wear reef shoes and/or fins to protect your feet from sharp coral and rocks.
  • Don’t touch or disturb marine life as it can harm them and even be dangerous to you.
  • Wear reef-safe sunscreen and/or a rash vest even on cloudy days to protect the coral and marine life from harmful chemicals.
  • Avoid snorkelling near passages as they have strong currents.
  • Listen to the advice of local tour operators and follow their instructions for safety.
  • Bring an underwater camera to capture the stunning marine life and landscape.

Best Places to Snorkel in Cook Islands

The Cook Islands are a paradise for snorkelling enthusiasts with a wealth of marine life (butterfly fish, bluefin trevally, etc.) and snorkelling sites. Below are some of the best places to snorkel in the Cook Islands.

Tikioki Marine Reserve (Fruits of Rarotonga)

Tikioki Marine Reserve, situated in the idyllic Rarotonga, is a must-visit destination for all snorkelling enthusiasts.

Referred to as the “Fruits of Rarotonga” snorkelling spot, this reserve is known for its stunning array of fish life and magnificent displays of tropical fish, giant clams, and moray eels.

Visitors can stop at the nearby Fruits of Rarotonga cafe for a refreshing smoothie before heading 100 metres along the beach to the right.

The reserve offers an extensive lagoon area. Snorkellers can swim to depths of 2-3 metres to explore the coral bommies and see a vast range of marine life. Tours like Snorkel Cook Islands can help you explore the deep lagoon area.

Cook Islands marine life, New Zealand
Cook Islands marine life
Vaka or Canoe Race in Aitutaki, Cook Islands, New Zealand
Aitutaki, Cook Islands

Snorkelling Spot Between Tamanu Beach Resort And Matriki Beach Huts

Located on the island of Aitutaki, the snorkelling spot between Tamanu Beach Resort and Matriki Beach Huts offers an excellent opportunity for snorkelling enthusiasts to discover the vibrant marine life of the Cook Islands.

With its clear waters and numerous coral formations, visitors can easily spot a variety of colourful fish species while snorkelling.

Guests staying at the resorts can make use of the complimentary kayaks and SUP boards, while those without their gear can rent snorkelling equipment from Tamanu Beach Resort.

Purple Wall

The Purple Wall in Aitutaki Lagoon is one of the best spots for snorkelling enthusiasts. This snorkelling spot is located in a shallow part of the lagoon, which can only be accessed through a lagoon cruise.

The name “Purple Wall” is derived from the abundance of purple coral that lines the coral bommies in the area. Snorkelers are guided along the length of the wall by buoys, preventing them from drifting off course.

The area teems with colourful fish, coral, and clams, making it one of the best places to snorkel in the Cook Islands.

Aitutaki lagoon, Cook Islands
Aitutaki lagoon, Cook Islands
@Aroa Lagoonarium Marine Reserve
@Aroa Lagoonarium Marine Reserve "Raui"

Aroa Lagoon Marine Reserve

The Aroa Lagoon Marine Reserve, situated on the Southwest coast of Rarotonga, is a protected area known for its exceptional snorkelling opportunities.

The reserve, located in front of The Rarotongan Beach Resort & Lagoonarium, prohibits touching any marine life within the area, resulting in a thriving and vibrant environment.

The reserve is an ideal place for snorkelling as it offers an abundance of small reef fish close to the shore, while further out, visitors can encounter giant clams, starfish, and other marine species.

Muri Lagoon

The Muri Lagoon, located on Muri Beach, is a popular destination on the island of Rarotonga. The beach is surrounded by various resorts and villas, making it a bustling tourist hotspot.

While snorkelling from the shore, visitors will come across sea cucumbers and the occasional fish. However, visitors can rent kayaks from the beach to witness the more exciting underwater world and head towards Motu Koromiri or Taakoka.

There are plenty of interesting spots to stop for snorkelling, and lucky snorkellers may even come across a sea turtle.

The crystal-clear waters of Muri Lagoon provide excellent visibility for snorkelling and kayaking, making it a must-visit location for those who want to explore the underwater world of the Cook Islands.

Muri Beach, Rarotonga, Cook Islands
Muri Beach, Rarotonga, Cook Islands
@Snorkel Cook Islands
@Snorkel Cook Islands

Base One

Base One is a highly recommended snorkelling spot located on the main island of Aitutaki. This area is situated at the western end of the old runway and is easily identifiable by the picnic tables and eco-toilet cabin under the shade of the trees.

The snorkelling spot at Base One is both sheltered and shallow, making it ideal for beginners and experienced snorkelers alike. The area features pockets of coral formations that provide a habitat for various tropical fish species and sea cucumbers.

Visitors can spend hours exploring the underwater world of Base One and enjoying the breathtaking views of the surrounding area.

Black Rock

Black Rock is a well-known swimming and snorkelling spot located on the northwestern side of Rarotonga. Due to the south easterly wind blowing, the area usually offers calm conditions, making it an ideal location for water activities.

Black Rock features a unique seascape with spectacular black volcanic rocks that protrude from the white sand, providing a stunning backdrop for snorkelling. The area is home to several rock pools with various marine creatures, adding to the excitement of the snorkelling experience.

For those seeking a more adventurous experience, scuba diving tours are available to explore the area’s underwater caves.

Black Rock beach, Rarotonga, Cook Islands
Black Rock beach, Rarotonga, Cook Islands
Snorkel Cook Islands, New Zealand
Snorkel Cook Islands, New Zealand

Tua’ati Rock Pools

Tua’ati Rock Pools is a hidden gem on the small island of Mangaia. It is a must-visit destination for those who want to explore the island’s marine life.

The area is accessible during low tide and is home to various marine creatures that cling to the jagged rocks. The crystal-clear waters surrounding the reef provide excellent visibility for snorkelling, allowing visitors to witness the underwater world of Tua’ati Rock Pools.

The area features pockets of deep pools perfect for snorkelling, providing an up-close view of marine life.

Aitutaki Lagoon – Giant Clam Farm

Aitutaki Lagoon’s Giant Clam Farm is a unique snorkelling spot that allows visitors to see giant clams and small native clams in their natural habitat. While giant clams can be spotted in many different areas across the lagoon, some lagoon cruises use a mooring at the Giant Clam Farm.

Visitors can witness the clams nestled under coral formations or lying plain-in-sight on the sandy floor.

The snorkelling spot is slightly deeper than other areas in the lagoon, at a depth of 3-4m (10-13ft), making it an ideal location for more experienced snorkelers.

Visitors can access the Giant Clam Farm snorkelling spot through tour operators, including Kutekute Tours & Transfers, Teking Lagoon Cruises, and The Vaka Cruise, Aitutaki.

Young giant clams (Tridacna sp.) grow in plastic bins in the island of Aitutaki s lagoon
Young giant clams (Tridacna sp.) grow in plastic bins in the island of Aitutaki s lagoon
Avaavaroa Passage, Cook Islands
Avaavaroa Passage, Cook Islands

Avaavaroa Passage

Avaavaroa Passage is a snorkelling spot located in Rarotonga that is known for its abundance of turtles.

Visitors can pretty much guarantee to see these majestic creatures, making it a popular destination for snorkelers. However, it’s important to note that the currents in this area can be extremely strong and have claimed lives in the past.

Therefore, it’s crucial not to attempt snorkelling here without a guide and previous experience in the area.


The best time to visit the Cook Islands for snorkelling is during the shoulder months of May, September, October, and November. During these months, the weather is generally dry and sunny, and the water is warm and calm, making it perfect for snorkelling.

The peak season in the Cook Islands is from June to August when the weather is warm, but there can be occasional rain and strong winds, which can affect snorkelling conditions. December to April is the rainy season, with higher humidity and occasional tropical storms, so it may not be the best time for snorkelling.

Overall, the shoulder months offer the best combination of good weather and ideal snorkelling conditions in the Cook Islands.


In conclusion, the Cook Islands offer some of the best snorkelling opportunities in the world.

With crystal-clear waters, an abundance of marine life, and diverse snorkelling spots, visitors to the Cook Islands can experience an underwater world like no other. However, it’s important to follow the guidelines and safety tips to ensure a safe and enjoyable experience.

With proper preparation and care, snorkelling in the Cook Islands can be a truly unforgettable adventure.



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