Be treated to world-class snorkelling and diving, or just sit back in total awe, by signing up for one of the best Great Barrier Reef tours.

Sprawled across more than 348,000 square kilometres, the Great Barrier Reef flows with rainbow coral gardens, robust marine life and sparkling turquoise waters. While the reef’s health has notably deteriorated in recent decades, coral restoration and water improvement efforts are working to secure the Far North Queensland marvel’s future. The best Great Barrier Reef tours are also doing a superb job in educating visitors while immersing them in its unique beauty.

Amid the admirable initiatives happening here, a string of environmentally responsible Great Barrier Reef tours are working to shine a light on the reef’s intricacies while showcasing just how special this place is. Focused on paving a sustainable future for the world’s largest coral reef system. Here are ten of our favourite tours to sign up for.

1. Reef Magic’s Reef Indulgence Package

Departing from: Cairns

Hear the ins and outs of conservation efforts straight from the horse’s mouth thanks to Reef Magic’s Reef Indulgence Package. Departing from Cairns via a chopper and destined for the company’s own pontoon located on the outer reef, the tour takes a bird’s eye view of this stunning corner of the world before guests take part in a lab tour led by a marine biologist. While fascinating intel is provided, so are canapes, champagne, a private snorkelling tour followed by lunch and a glass-bottom boat tour before guests are swept back up and over the reef to Cairns. Prices start from $1,499 per person with a two-guest minimum.

2. Wavelength’s Full Day Outer Reef Snorkel Tour

Departing from: Port Douglas

Speaking of first-hand wisdom, Wavelength’s Full Day Outer Reef Snorkel Tour offers a leisurely day on the outer reef led by marine biologists. While reef talks offer a genuine debrief on the Great Barrier Reef and the environmental threats it faces, guided snorkelling across three locations is also steered by the experienced experts. Expect morning tea, gourmet rolls for lunch, complimentary underwater photos and, if you’re travelling in the cooler months, even the odd whale sighting as the Great Barrier Reef tour familiarises guests in style. Prices start from around $298 per person.

3. Sunlover Reef Cruises’ Reef & Island tours

Departing from: Cairns

Sunlover Reef Cruises’ Reef & Island tours offer travellers an action-packed immersion while adhering to strict environmentally responsible practices. Choose from two varieties: the ’10-Minute Scenic’ which includes a 10-minute scenic flight over the reef, a buffet lunch at Fitzroy Island and plenty of time for snorkelling, or the ‘Fly Out | Cruise Back’ which includes a 25-minute flight from Cairns to a private pontoon, buffet lunch at Fitzroy Island, snorkelling and a catamaran cruise back to Cairns. Prices start from $475 per person.

4. Quicksilver’s Great Barrier Reef Tour

Departing from: Port Douglas

Spend a day onboard Quicksilver’s Great Barrier Reef Tour, where a catamaran will escort you to the underwater wonderland of Agincourt Reef, one of the best snorkelling and diving spots on the Great Barrier Reef. Prefer to stay dry? An underwater observatory and semi-submersible coral reef viewing platform means you can experience a diver’s view of the reef in air-conditioned comfort. A marine biologist presentation is also included, as is morning and afternoon tea, a buffet lunch and all snorkelling gear. Prices start from $325 per person.

5. Sailaway’s Great Barrier Reef tours

Departing from: Port Douglas

Leading eco-tourism operator Sailaway offers snorkelling tours with marine biologists as well as relaxing sailing tours, which – running mostly on wind power – offer the most sustainable way to experience the Great Barrier Reef. Various tours are on offer, including explorations of dreamy Mackay Cay and the white sand Low Isles coral cay, while your mode of transport comes in the way of luxury catamarans. Afternoon tea and a buffet lunch, plus snorkelling equipment and reef talks, are typically included. Prices vary a lot so check the website to find your tour’s current cost.

6. Passions of Paradise’s Full Day Great Barrier Reef Tour

Departing from: Cairns

With its 25-metre sailing catamaran and a deep desire to spread reef protection education, Passions of Paradise’s Full Day Great Barrier Reef Tour is a great example of sustainable reef tourism. Journey from Cairns to two outer reef locations in search of sea turtles, colourful fish and a variety of corals. The Great Barrier Reef tour also provides an opportunity to meet with an eco-accredited marine naturalist, while all snorkelling gear, a chef-prepared lunch and fruit, morning and afternoon tea are also included. Prices start from $260 per person.

7. Dreamtime Dive & Snorkel

Departing from: Cairns

One of the few Great Barrier Reef tours to embrace Indigenous culture and creation stories as part of its reef showcase, Dreamtime Dive & Snorkel delivers a deeper understanding and appreciation of the largest living coral reef structure on Earth. You’ll visit two outer reefs within Gunggandji Sea Country, not before being treated to an Indigenous welcome and acknowledgement, and a morning tea spread. Then, once the first snorkelling location wraps, a buffet lunch will be served and it’s straight onto the second reef. Taste bush foods along the journey, too. Prices start from $225 per person.

8. Ocean Spirit Cruises’ Discover Michaelmas Cay tour

Departing from: Cairns

Combine boat and beach time on a chilled day out from Cairns with Ocean Spirit Cruises’ Discover Michaelmas Cay tour. A two-hour motorised sail onboard a 32-metre sailing catamaran will land you at Michaelmas Cay, a small sand cay encircled by a spectacular fringing reef. It’s also a protected sanctuary for migratory seabirds. Once here, opt for a snorkel in the cay’s shallow waters, try an introductory scuba dive, cruise the semi-submarine for a diver’s perspective on the reef, watch a fish-feeding presentation, observe the bird life or simply relax in your own little slice of paradise. This is both an eco-friendly and family-friendly option, with prices starting from $276 per adult and $144 per child.

9. Big Cat Green Island Reef Tours’ Full-Day tour

Departing from: Cairns

For a day out on a rainforest-clad coral cay, just say yes to Green Island, 28 km off the coast of Cairns. Big Cat Green Island Reef Cruises’ Full-Day tour whisks you over to snorkel, dive and swim in its bath-like warm waters, plus you can pay a little extra to see the reef from a semi-submarine or a glass-bottom boat. Green Island holds traditional and contemporary significance for the Guru-Gulu Gungandji people, so expect to learn how its Indigenous roots work in harmony within the wider Great Barrier Reef ecosystem. While you’re on the tiny island, snap up the chance to visit a crocodile sanctuary, home to the largest captive varieties. Prices start from $120 per person.

10. Frankland Islands Reef Tour

Departing from: Cairns

Start the day with a rainforest river cruise before a quick skip – the shortest open water crossing of any day tour from Cairns – to Normanby Island in Frankland Islands National Park on board the Frankland Islands Reef Tour. The Great Barrier Reef tour will place you right on the Great Barrier Reef with its vibrant fringing reefs teeming with all manner of marine life, including turtles, octopuses and anemone clownfish. Lunch and transfers from select Cairns accommodation are also included with prices starting from $250 per adult.

For more travel tips and itineraries, read our ultimate guide to visiting the Great Barrier Reef