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“Tourism combined with education can be powerful tools. Helping to increase awareness and protect the environment for future generations is an essential part of our daily operations. When our guests go on to become eco-ambassadors for the Great Barrier Reef, they bring that awareness to their local communities around the globe, effecting change.”

Here to guide!

Surround yourself in the best natural classroom, the Great Barrier Reef!

Learn from the crew that know some of the Northern Great Barrier Reef best!

Catering for visitors of all ages to the Great Barrier Reef who want to learn more about what they are seeing, Reef Biosearch marine biologists are part of the crew onboard most of the Quicksilver Group's cruises operating from Cairns and Port Douglas.

With over 20 years of continuous accreditation for Advanced Ecotourism certification, Quicksilver Cruises and Great Adventures are proudly recognised amongst Australia’s pioneering nature-based tourism operators and have been inducted into Ecotourism Australia’s Hall of Fame.

You can join a Reef Biosearch marine biologist on these wonderful Great Barrier Reef experiences.

Quicksilver Outer Reef

Departing from Port Douglas, Quicksilver visits a spacious reef activity platform (pontoon) permanently moored at the stunning Agincourt reef, a ribbon reef located adjacent to Australia’s continental shelf.

With activities for swimmers and non-swimmers, you can snorkel and dive or stay dry and discover from the semi-submersible, see the fish feeding presentation and watch colourful fish dart and play from the underwater observatory.

Optional activities include introductory and certified scuba diving, Oceanwalker helmet diving, marine biologist snorkel tours and helicopter flights.

Meet the Reef Biosearch team!

Enroute to the Outer Reef, listen out for the informative marine biology presentation.

You can also join an optional Guided Snorkel Tour suited to your ability.

  • Introductory: for the novice or beginner snorkeller.
  • Advanced: for the more experienced, snorkelling experience is recommended.

Learn more about Quicksilver’s snorkel tours

Or just have a chat to one of the friendly marine biologists onboard!

Great Adventures Outer Reef

Departing from Cairns, Great Adventures “Great Barrier Reef Adventure” visits an activity platform permanently moored at the outer reaches of the vibrant Moore Reef. From here, there are activities for all ages, swimmers and non-swimmers to enjoy.

Snorkel, cruise in the semi-submersible and view the reef from the underwater observatory, or relax on the sundeck with a buffet lunch.

Optional activities include scuba diving, marine biologist guided snorkel tours, scenic helicopter flights and the unique ‘Scuba-Doo’ underwater scooter.

For the complete reef and island adventure, you can even include an optional two hour stopover to explore tropical Green Island.

Meet the Reef Biosearch team!

  • Learn with an informative reef presentation
  • Watch the Fish Feeding session
  • Join an optional Guided Snorkel Tour
  • Or just have a chat onboard!
Guided Snorkel Tours with 4 People

Green Island Day Trips

Green Island, known as Wunyami the sea country of the Gungganji and Yidinji people, is a beautiful 6000 year old coral cay located 27 km from Cairns. It has a unique reef and rainforest environment and you’ll be there in just 45 minutes onboard a Great Adventures fast catamaran.

Located in the Great Barrier Reef Marine, Green Island is also a National Park. As a day visitor you can join the glass bottom boat tour with informative commentary, snorkel from the beach and enjoy a self-guided rainforest walk.

Guided snorkel tours are also available with one of the knowledgeable Reef Biosearch team.

There’s also a great range of optional activities like scuba and Seawalker helmet diving, parasailing and even the Marineland Melanesia crocodile park!

Green Island is home to our Green Island Living Classroom and also the boutique Green Island Eco Resort. Great Adventures Green Island tours depart daily from Cairns.

Glass Bottom boat with people pointing to what they see

Wavedancer Low Isles

Low Isles is one hour’s sailing from Port Douglas onboard Quicksilver Cruises 30m sailing catamaran, Wavedancer III. The Low Isles are known as Wungkun, sea country of the KuKu Yalanji and Yiragandi people.

From the moment you step aboard Wavedancer III, the Reef Biosearch marine biologists are ready to share an amazing day of discovery with all inclusive engaging activities for all ages.

The informative reef interpretation presentation enroute to Low Isles will give you an appreciation of the idyllic Low Isles.

Once on Low Isles, join the marine biologist for a fun and interactive reef discovery snorkel tour, learning from their extensive knowledge about the charismatic marine life that call Low Isles home

Back on the beach, a leisurely and interesting island walk will take you along the foreshore and through the island’s Heritage trail, including a visit to the very first light house on the Great Barrier Reef and a marine discovery research hut.

Biologist explaining book on vessel
Walking tour in the forest

Ocean Spirit Michaelmas Cay Cruises

Departing from Cairns, the beautiful 32m sailing catamaran, Ocean Spirit, sets sail to the picturesque and unique reef environment of Michaelmas Cay.

Encircled by a spectacular fringing reef teeming with colourful marine life, it’s also a bird watcher’s delight and important protected sanctuary for migratory birds.

You can snorkel from the beach in the cay’s shallow protected waters, cruise in the semi-submersible for a diver’s view of the reef, watch the fish feeding presentation or just relax on the beach.

There’s also introductory scuba diving for first time divers and marine biologist guided snorkel tours available.

Meet the Reef Biosearch team!

  • Learn with the informative marine biologist reef presentations
  • See the fish feeding presentation on arrival
  • Join the optional guided snorkel tour.
3 Snorkellers with a guided Snorkel tour

Dive & Snorkel Adventures

Designed for the adventure minded, these wonderful reef experiences enable you to visit three different Great Barrier Reef sites in one day. This is an active in-water day with the only activities being snorkelling, introductory and certified scuba diving.

  • Silverswift Dive & Snorkel Adventures, Departs Cairns
  • Silversonic Dive & Snorkel Adventures, Departs Port Douglas
  • Poseidon Outer Reef Cruises, Departs Port Douglas

With exclusive permits and remote sites, you can dive and snorkel 3 uniquely different and ecologically diverse sites, each chosen to suit the day’s conditions.

Silversonic and Poseidon have the largest selection of over 35 stunning World Heritage sites at the Agincourt ribbon reefs at the very outer edge of the Great Barrier Reef.

Silverswift visits a selection of 19 sites at some of the very best Outer Reef locations at Flynn, Pellowe, Milln and Thetford Reefs.

At the third site of the day, be sure to join the marine biologist for the free guided snorkel tour.

An added bonus if encountered, Silversonic and Poseidon have permits to swim with Minke whales.

Green Island Resort

Green Island Resort, a wonderful boutique eco resort is located on the Great Barrier Reef 45 minutes from Cairns’ mainland by fast catamaran. The resort has just 46 beautifully appointed rooms nestled amid rainforest and secluded from day visitor facilities.

The resort offers a unique blend of first class accommodation and unparalleled access to the magnificent Great Barrier Reef, lush rainforest, and a spectacular array of bird and marine life.

With a focus on sustainability, the Reef Biosearch team provide a range of activities for house guests to enjoy. These include a “Clean & Green island walk” learning about island history and ecology while helping to keep the island free from marine debris and litter, and a glass bottom boat Reef Resilience tour giving an insight into caring for the Great Barrier Reef, including a coral restoration project being undertaken at an island site. Any debris collected during the walk also provides valuable data for the Australian Marine Debris Initiative.

Behind the scenes, ‘back of house’ tours are available. Green Island Resort’s sustainability initiatives passionately balance the needs of guests and the protection of our World Heritage environment – from the original construction that set ecotourism accommodation standards, through to installation of renewable and new generation power technologies and some of the most innovative waste management practices in Australia.

Welcome Sign at Green Island National Park with people walking in the background