Thailand – Australia – United Kingdom

Great Barrier Reef Trips

The Great Barrier Reef is the world’s largest reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,600 kilometres (1,600 mi) over an area of approximately 344,400 square kilometres (133,000 sq mi). The reef is located in the Coral Sea, off the coast of Queensland in north-east Australia.

The Great Barrier Reef can be seen from outer space and is the world’s biggest single structure made by living organisms. This reef structure is composed of and built by billions of tiny organisms, known as coral polyps. This reef supports a wide diversity of life, and was selected as a World Heritage Site in 1981. CNN labeled it one of the seven natural wonders of the world. The Queensland National Trust named it a state icon of Queensland.

A large part of the reef is protected by the Great Barrier Reef Marine Park, which helps to limit the impact of human use, such as fishing and tourism. Other environmental pressures on the reef and its ecosystem include runoff, climate change accompanied by mass coral bleaching, and cyclic population outbreaks of the crown-of-thorns starfish.

The Great Barrier Reef has long been known to and used by the Aboriginal Australian and Torres Strait Islander peoples, and is an important part of local groups’ cultures and spirituality. The reef is a very popular destination for tourists, especially in the Whitsunday Islands and Cairns regions.

Now with Technical Diving in Cairns opportunities in Australia we’ve expanded to include the best diving conditions in the world.


– Cod Hole and Ribbon Reef | 3 Days | from 40,000 THB

Big Blue Tech offers the best in live-aboard dive cruising to the Cod Hole and Ribbon Reefs. This tour begins every Monday from Cairns, and travels along the rarely visited Ribbon Reefs, finishing 240 km to the north at the world famous Cod Hole.

Over two and half days you will have the opportunity for up to 11 dives and encounter clouds of colourful tropical fish, an incredible variety of vibrant healthy corals, giant clams, anemones, huge schools of cruising pelagic fish, and a family of giant potato cod. Your last night is spent on board the boat in the bay at Lizard Island. Enjoy time ashore at Lizard Island the next morning, before boarding your return flight to Cairns. The one-hour, low-level scenic flight back will arrive in Cairns around 11:30am on Thursday.


– Coral Sea & Ribbon Reef | 4 Days | from 50,000 THB

Big Blue Tech offers the best in live-aboard dive cruising to the Coral Sea and Ribbon Reefs. The 4 Day Coral Sea tour begins Thursday morning at 8.30am, with a low level flight from Cairns along the coastline and over the reef to Lizard Island, to meet the ‘Spirit of Freedom’. The first day will see you diving the very top of the Ribbon Reefs, before overnight travel out to Osprey Reef in the Coral Sea. Two days is spent diving the spectacular walls of Osprey Reef, an old volcanic atoll lying 220 km off the coast.

Renown for its spectacular 1000 metre walls, Osprey Reef also offers massive soft corals, amazing shark action, and exceptional visibility. ‘North Horn’ at the tip of Osprey is a site where grey reef sharks, silvertips, and the occasional oceanic congregate. Here you can also experience a close encounter with the Spirit of Freedom shark attraction dive. The last day is spent at Ribbon Reef Number 3, or occasionally if the weather permits, Bougainville Reef, to the south of Osprey Reef. Overnight travel on the last night, returns you to Cairns early on the Monday morning.


– Coral Sea & Cod Hole & Ribbon Reef | 7 Days | from 100,000 THB

Big Blue Tech offers the best in live-aboard dive cruising to the Coral Sea and Ribbon Reefs. This tour begins every Monday from Cairns, and travels 240km along the rarely visited Ribbon Reefs, to the Cod Hole. Along the ‘Ribbons’ you will encounter clouds of colourful tropical fish, an incredible variety of vibrant healthy corals, giant clams, anemones, huge schools of cruising pelagic fish, and a family of giant potato cod.

Within your 7 days, you will also spend 2 days at Osprey Reef in the Coral Sea. An old volcanic atoll lying 220km off the coast, Osprey Reef is renown for its spectacular walls to 1000m, its massive soft corals, shark action, and exceptional visibility. ‘North Horn’ at the tip of Osprey is a site where grey reef sharks, silvertips, and the occasional oceanic congregate. Here you can also experience a close encounter with the Spirit of Freedom shark attraction dive.

This tour also includes an overnight stay in secluded Watson’s Bay and a couple of hours ashore at Lizard Island. Return to Cairns 7 days later on the Monday morning.


What’s included:

Technical diving live-aboard expeditions are run on a very regular basis – normally twice a month, plus very occasional recreational diving trips. All meals are provided, a mixture of Indonesian and international cuisine.

Technical tours take a maximum of twelve divers. Twins (2 x DIN aluminum 11 or 13litre) and DIN deco cylinders are included, all other equipment is available for rent. We are CCR rebreather – friendly. If you can put a group together, we’re more than happy to give you a daily charter price.

Cost of Oxygen is minimal, maximum of US$10 per diver- total usage divided amongst the team, (if we can be bothered to do the maths)!

Continuous Flow Nitrox to 40% included in the above.

Trimix is also blended with continuous flow, helium costs 3baht/litre. Helium analyser on board.

For CCR Divers, all popular brands of rebreather sorb are available on-board (but please confirm you’re requirements prior to the trip), and oxygen can be boosted to 200 bar if required. We have CCR rebreather cylinders to fit all popular CCR units.