THE ADVENTURE COLLECTIVE® · Independent discovery and booking for outdoor travel
A short, 45-minute catamaran from Cairns lands you on Green Island, a 6,000-year-old coral cay with rainforest and easy-access reef life. The Seawalker helmet dive lets non-swimmers walk the seafloor amid tropical fish, followed by optional snorkel or glass-bottom-boat exploration.
A short, 45-minute catamaran from Cairns lands you on Green Island, a 6,000-year-old coral cay with rainforest and easy-access reef life. The Seawalker helmet dive lets non-swimmers walk the seafloor amid tropical fish, followed by optional snorkel or glass-bottom-boat exploration.
The fast catamaran pushes away from Cairns with the harbor shrinking behind you; in just 45 minutes the open sea opens into a rim of pale sand and the low-profile silhouette of Green Island. Salt and sunlight carry the island's small rainforest toward you, and the reef—six thousand years in the making—waits in shallow turquoise.
Verified experiences and guided adventures in the surrounding area.
Operated by The Quicksilver Group · Cairns, Queensland
The fast catamaran pushes away from Cairns with the harbor shrinking behind you; in just 45 minutes the open sea opens into a rim of pale sand and the low-profile silhouette of Green Island. Salt and sunlight carry the island's small rainforest toward you, and the reef—six thousand years in the making—waits in shallow turquoise.
Green Island is the only coral cay on the Great Barrier Reef with an intact rainforest canopy, a compact collision of geology and biology: windblown sand built the cay atop living coral, and the forest now shades nesting terns and green-backed lizards. The Seawalker helmet dive takes place at a carefully chosen shallow site minutes offshore, where guides lower you to the sandy seafloor and colorful reef fish thread through bommies. The helmet keeps your head dry, you can wear glasses, and non-swimmers who are comfortable standing in waist-to-chest depth water will find the experience accessible.
Afterward, choose a glass-bottom boat tour or hit the reef edge with a snorkel; the island also offers a pool bar and simple cafe for regrouping. Practicalities matter: check in at the Reef Fleet Terminal 45 minutes before departure, complete the required medical questionnaire, and note the minimum age of 12 for Seawalker. Because of dive procedures, avoid flying or traveling to high altitude for 12 hours after the helmet dive.
Plan for sun, wind and occasional swell: reef-safe sunscreen, a lightweight coverup and motion-sickness meds will keep the day focused on the reef, not the logistics. Whether you come for underwater walking or a casual snorkel, Green Island delivers a compact, well-supported reef experience a short ride from Cairns.
moderate.
5–9 hours.
Moderate fitness—able to stand in chest-deep water and walk short distances on uneven, sandy seafloor; some mobility required for boarding the vessel.
Yes—participants stand on the seafloor in shallow water while guides supervise; comfort in waist-to-chest depth water is required.
Participants must be at least 12 years old; all guests complete a medical questionnaire before participating.
No—personal cameras are not permitted underwater for safety and equipment reasons; a professional photographer takes images you can purchase afterward.
The fast catamaran crossing is about 45 minutes; check in and collect your boarding pass at the Great Adventures counter in the Reef Fleet Terminal 45 minutes before departure.
Green Island is a coral cay formed over roughly 6,000 years and hosts the only rainforest on a reef cay in the Great Barrier Reef Marine Park.
The island operates within Marine Park rules—use reef-safe sunscreen, avoid touching coral, and follow guide briefings to minimize impact on fragile reef systems.
The Quicksilver Group operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.
The fast catamaran pushes away from Cairns with the harbor shrinking behind you; in just 45 minutes the open sea opens into a rim of pale sand and the low-profile silhouette of Green Island. Salt and sunlight carry the island's small rainforest toward you, and the reef—six thousand years in the making—waits in shallow turquoise.
The fast catamaran pushes away from Cairns with the harbor shrinking behind you; in just 45 minutes the open sea opens into a rim of pale sand and the low-profile silhouette of Green Island. Salt and sunlight carry the island's small rainforest toward you, and the reef—six thousand years in the making—waits in shallow turquoise.
Green Island is the only coral cay on the Great Barrier Reef with an intact rainforest canopy, a compact collision of geology and biology: windblown sand built the cay atop living coral, and the forest now shades nesting terns and green-backed lizards. The Seawalker helmet dive takes place at a carefully chosen shallow site minutes offshore, where guides lower you to the sandy seafloor and colorful reef fish thread through bommies. The helmet keeps your head dry, you can wear glasses, and non-swimmers who are comfortable standing in waist-to-chest depth water will find the experience accessible.
Afterward, choose a glass-bottom boat tour or hit the reef edge with a snorkel; the island also offers a pool bar and simple cafe for regrouping. Practicalities matter: check in at the Reef Fleet Terminal 45 minutes before departure, complete the required medical questionnaire, and note the minimum age of 12 for Seawalker. Because of dive procedures, avoid flying or traveling to high altitude for 12 hours after the helmet dive.
Plan for sun, wind and occasional swell: reef-safe sunscreen, a lightweight coverup and motion-sickness meds will keep the day focused on the reef, not the logistics. Whether you come for underwater walking or a casual snorkel, Green Island delivers a compact, well-supported reef experience a short ride from Cairns.