Semi-Submarine Tour

Guided Semi-Submarine Tour

Experience the depths from our Semi-Submarine

Dive into the underwater world without getting your hair wet! Our semi-submarine tour is the ultimate way to explore the vibrant marine life, coral reefs, and breathtaking seascapes surrounding Normanby Island, all while staying comfortably dry.

With large viewing windows beneath the water’s surface, our semi-submarine offers an immersive, up-close encounter with the ocean’s wonders. No need for snorkelling gear or diving expertise; simply sit back and enjoy the mesmerizing underwater show as you listen to an informative commentary about life on the Great Barrier Reef. 

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Our crew will expertly guide the semi-submarine to some of our favourite locations where you will be able to spot a variety of corals, fish, giant clams and other critters just centimetres from the hull of the sub!

Our semi-submarine tour is available to all guests and a perfect alternative for those who prefer a dry adventure or have physical limitations.

The semi-submarine tour takes approximately 30 minutes to complete the tour and provides a unique and accessible way to soak in the beauty of the deep blue sea without getting soaked yourself!

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Enjoy the semi-sub experience as part of our All-Inclusive and Express day tours

Adult (17+)
$195

Child (16 – 4 years)
$125

Infant (3 and under)
Free of charge

Family Pass (2AD and 2CH)
Second child travels free!
$525

Prices quoted are in $AUD and include all taxes and a temporary fuel recovery surcharge. Valid until 31 March 2027 or until superseded.

What will you see?

Every semi-submarine trip is different, but here are some of the creatures and critters you may spot on your trip

Clownfish (Nemo) on the Great Barrier Reef - Frankland Island
Nemo (Anemonefish)

Instantly recognizable due to its bright orange colouring and distinctive white stripes, the clownfish – which is also known as the anemonefish – gained worldwide fame thanks to the 2003 film Finding Nemo. Many clownfish call Frankland Islands home, so you’ll be able to Find Nemo easily!

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Hard and Soft Corals

There are all sorts of different corals that can be seen from the semi-sub including slow-growing boulder corals, fast-growing branching and plate corals, deep corals with big tentacles to catch food, brain corals, honeycomb corals, lettuce corals (pictured), and many more.

Giant Clam
Giant Clams

Many of the giant clams around Normanby Island are over 80 years old! They filter the water for food and keep algae in their skin (like coral) to get energy from the sun. They even have eyes, and will close up their shell quickly to scare off any approaching predators!

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Fish

In between the coral heads, you will often see a range of fish feeding at the bottom including parrotfish (pictured), butterflyfish and cleaner wrasses. Some graze on the algae, like herds of wildebeest, others searching for snails and crustaceans under the rubble and sand to nibble on.

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Echinoderms (Starfish)

There are many members of the Echinodermata family that live around Normanby Island that you can see on your Semi-Sub tour, including starfish, brittle stars, sea urchins, sand dollars, and sea cucumbers. Interestingly, most echinoderms are able to regenerate tissue, organs, and limbs.

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Sea Turtles

During your semi-sub tour, you’re very likely to see our company mascot – the sea turtle! We are lucky to have two species of endangered sea turtles found around Frankland Islands: the Green Turtle (Chelonia mydas), and the Hawksbill Turtle (Eretmochelys imbricata).

Benfield2015, Apr 2026 (Tripadvisor)

Fabulous experience. Staff had tons of enthusiasm and took great care of us. The person that lead the snorkel tour (I didn’t catch her name but she is from Missouri) was particularly great. Do not hesitate to take this tour. The snorkeling was awesome and we had plenty of time. Even saw a manta ray!

Rachel N, Aug 2025 (Tripadvisor)

Wow!! What a fabulous trip. Friendly, warm and knowledgeable guides, fabulous and yummy lunch. The island itself is beautiful, relatively untouched and a multitude of sealife to view. A truly wonderful day.

Marco F, Mar 2026 (Tripadvisor)

Truly awesome! Much better and less crowded/touristy than the Outer Reef/Green/Fitzroy tours for a more secluded feel. All inclusive makes it stress free. Tour guides were fun and informative. River entrance adds the croc dimension. Definitely recommend this tour more than the others or at least do both, but don’t miss this.

Amelia, Feb 2026 (Tripadvisor)

Amazing day out at Frankland Islands. The staff were so great with the kids (they especially loved the pirate treasure hunt)! We had a wonderful time on the glass bottom boat, snorkelling with turtles and kayaking. Thanks to the great crew, especially Riley & Jimmy who made our day!

Liz K, Feb 2026 (Tripadvisor)

Excellent tour. Frankland Islands are fascinating. River cruise is very interesting way to start a trip to the Great Barrier Reef. Short ocean crossing to the islands. The staff are highly qualified, attentive and friendly. Tour is very well organised.

Andy N, Nov 2025 (Tripadvisor)

A superb day out on the reef on a deserted island. All inclusive experience including hotel transfer, lunch and all snorkelling kit etc. first class tour guides offering insight, humour and great organisation. Walk around the island, take in the breath-taking views, snorkel for marine life and befriend some baby black tip reef sharks! They even threw in a croc sunbathing on the way back. Well worth the money!

Josh, May 2026 (Google Reviews)
Had a beautiful day, shark, many mantas, turtles, beautiful coral and thousands of fish. Max was an excellent guide too. Highly recommend
Alan S, Apr 2026 (Google Reviews)

The whole day was great. Starting in the river and then going into the ocean gave a different perspective than other cruises. Saw a crocodile on the way back in the river. Highly recommend this company and cruise.

Simone W, Apr 2026 (Google Reviews)

Amazing experience, beautiful island that is truly well maintained, the crew did such a great job in keeping us safe and making us feel comfortable and giving us the best experience ♥️🐢

 

Oliver, Apr 2026 (Google Reviews)

A perfect day with a totally engaged and friendly staff. I can recommend this to everyone, so much better with the small group and more individual than all the other snorkeling tours mass tourism tours.

Matt R, Mar 2026 (Google Reviews)

Thanks to the whole Frankland Islands team, we had a great day out. Everyone was so friendly. Max especially was great with the snorkel safari and the island walk; he was so knowledgeable and genuinely interested in what he was showing us. We would highly recommend this.

Book your underwater adventure now!