Spend a day on an air-conditioned vessel to Michaelmas Cay and Hastings Reef—guided snorkels, glass-bottom viewing, buffet lunch and island access. This full-day tour covers outer-reef highlights 22–30 nautical miles from Cairns.
Spend a day on an air-conditioned vessel to Michaelmas Cay and Hastings Reef—guided snorkels, glass-bottom viewing, buffet lunch and island access. This full-day tour covers outer-reef highlights 22–30 nautical miles from Cairns.
Verified experiences and guided adventures in the surrounding area.
Operated by Seastar Cruises · Cairns, Queensland
Sea spray hits the rails as Seastar slips away from Cairns Marlin Marina at first light, the city shrinking into a line of roofs while the ocean widens into a sheet of turquoise and deep blue.
easy.
7–8 hours.
Suitable for most fitness levels; participants should be comfortable entering and exiting the water and able to snorkel short distances.
The crossing to Michaelmas Cay is roughly 22 nautical miles (about 40 km) and typically takes around 90–120 minutes depending on sea conditions.
Yes—wet suits or stinger suits are provided seasonally and recommended during stinger season (generally October–May in this region).
Yes—non-swimmers can use buoyancy vests and enjoy glass-bottom boat viewing and island time; guided snorkels are optional.
Full refunds are available if you cancel at least 24 hours before departure; cancellations for bad weather or insufficient numbers may also be refunded.
The outer Great Barrier Reef developed over millennia from coral growth atop submerged continental and volcanic structures; Michaelmas Cay is a dynamic sand island shaped largely by currents and seabird activity.
This area is within the Great Barrier Reef Marine Park—follow no-touch rules, use reef-safe products, and respect restricted zoning to reduce impact.
Seastar Cruises operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




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