Great Barrier Reef, Australia

The Great Barrier Reef experienced its sixth mass bleaching event in 2024 and 2025, the first consecutive-year bleaching in the reef’s recorded history. By April 2024, 80 percent of coral colonies surveyed showed bleaching, and 44 percent of those were dead by July. In the northern reef, hard coral cover dropped by nearly 25 percent in a single year. This is not the same as saying the reef is dead. Parts of it remain in very good condition. But where you dive or snorkel now matters more than it did a decade ago, and going in without knowing any of this would be like visiting a city without knowing there had been a major fire.

What the Reef Is

The Great Barrier Reef runs 2,300 kilometres along the Queensland coast, containing roughly 900 islands and 2,900 individual reefs. It is the largest coral reef system on earth and visible from space. The bleaching events that have happened since 2016 have hit the northern and central reef hardest; the southern reef, while stressed, has recovered better in some sections. This geography should shape your itinerary.

Getting There

Cairns is the primary access point. Day boats leave from the Cairns Marina from around 8am and reach outer reef pontoon platforms in 90 minutes. A standard day trip including snorkelling, glass-bottom boat viewing, and pontoon access costs AUD 180 to 230. These platforms are crowded; at peak season, 200 or more people are on the water simultaneously. You will not be alone.

For better coral and fewer crowds, liveaboard operators take smaller groups to remote outer reef sites over two to five nights. Spirit of Freedom and Mike Ball Dive Expeditions run trips to the Ribbon Reefs north of Cairns and the Coral Sea; prices from around AUD 700 per person for two nights. The reef quality at these sites is noticeably higher than day-trip zones.

Port Douglas, 65 kilometres north of Cairns, runs trips to the Agincourt Ribbon Reefs, generally considered in better condition than reefs accessible from Cairns. A day trip from Port Douglas costs AUD 220 to 260 and is worth the extra distance.

Green Island and Fitzroy Island

Green Island is 27 kilometres from Cairns, a coral cay reachable in 45 minutes by day-trip ferry (AUD 100 to 120 return). You can snorkel directly from the beach without additional equipment. Fitzroy Island, 26 kilometres southeast, is a continental island with accessible reef and significantly fewer crowds than Green Island.

When to Visit

June through October is the dry season: low humidity, minimal rain, water temperatures around 22 to 24 degrees Celsius. Box jellyfish make swimming in Cairns’ shallow coastal waters inadvisable from November through May without a full stinger suit; offshore reef sites are less affected. The dry season is the right time for a first visit.

Eating and Staying in Cairns

Cairns has accommodation from backpacker dorms at AUD 30 per night to resort hotels. Ochre Restaurant on the waterfront runs a long-standing Aboriginal-inspired menu with kangaroo, crocodile, and native plant ingredients at around AUD 35 to 45 per main; it has been doing this since before native-ingredient menus became fashionable in Australian cities. The Night Markets on Abbott Street operate nightly with food stalls covering most Asian cuisines. They’re cheaper and more honest than most of the Esplanade restaurants.

The reef visit itself is the reason to come to Cairns. The city is functional and there are decent restaurants, but nobody is making a case for the city centre being a destination in its own right. What surrounds it is extraordinary; the city is an access point.