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.
More ways to explore the area's outdoor wonders
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.
Difficulty
easy
Duration
7–8 hours
Fitness Level
Suitable for most fitness levels; participants should be comfortable entering and exiting the water and able to snorkel short distances.
Wildlife
History
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.
Conservation
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.
Reserve your spot on the Seastar Luxury Outer Great Barrier Reef Island and Reef Tour today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Sun protection is non-negotiable
Use reef-safe sunscreen, a wide-brim hat on deck, and UV-protective clothing—sun reflects strongly off water even on cloudy days.
Prepare for stinger season
Wear the supplied stinger suit in summer/early autumn to avoid jellyfish stings; operators will advise by season.
Manage seasickness early
If you’re prone to motion sickness, take medication or use patches the night before and just before boarding.
Protect the reef
Don’t touch or stand on coral and use only reef-safe products; follow guide briefings to minimize impact.
Reef-safe sunscreen
Protects skin while preventing harm to corals.
summer
Mask, snorkel and fins (optical mask if needed)
Provided by the operator but bringing a well-fit mask ensures clearer, longer snorkels.
Light stinger suit or wetsuit
Reduces jellyfish sting risk and helps with warmth in cooler months.
summer
Anti-nausea medication
Helps if you’re susceptible to motion sickness on open-water crossings.