Green Island sits 27 kilometres off Cairns and takes about 45 minutes to reach by catamaran. On paper, that sounds like a quick hop to a reef island. In practice, it delivers something that surprises most visitors – a coral cay with its own national park rainforest, fringing reef you can snorkel straight from the beach, and enough to fill a full day without ever feeling rushed.
Cairns Discovery Tours sends visitors to Green Island every day of the week, and this guide covers the practical picture – what is included in a day tour, what the snorkelling is actually like, what facilities are on the island, and how to make the most of your time.
What Is Green Island?
Green Island is a coral cay sitting inside the Great Barrier Reef Marine Park. At around 13 hectares, it is compact – you can walk the entire perimeter in under 30 minutes. But what it lacks in size, it more than makes up for in what it packs in.
The island is a designated national park with a short rainforest walking trail through the interior, home to large Pisonia trees that can be several hundred years old. White sand beaches wrap the shoreline, and the fringing coral reef starts metres from shore – no boat ride required.
It is one of those places where you step off the ferry and immediately understand why people keep coming back.
Getting there
Green Island is reached by catamaran from the Reef Fleet Terminal at the Cairns Marina, 1 Spence Street – a short walk from central Cairns. Multiple departures run throughout the morning, with afternoon return ferries giving you flexibility in how long you stay.
The catamarans are modern and air-conditioned. The upper deck fills quickly, so board early if you want a seat up top. The lower deck is quieter and slightly smoother on choppier days.
Green Island tours are bookable through Cairns Discovery Tours – our team can help you find the right departure and inclusions for your group.
Related reading: The 3 best islands to visit on the Great Barrier Reef
What is included in a Green Island day tour?
Inclusions vary depending on which package you book. Here is a general breakdown:
| Inclusion | Typically included | Available as an add-on |
| Return ferry transfers | Yes | – |
| Snorkel gear hire | On some packages | On others |
| Glass-bottom boat tour | On some packages | On others |
| Buffet lunch | On some packages | On others |
| Rainforest walk access | Yes (free on the island) | – |
| Beach access | Yes | – |
| Seawalker helmet dive | No | Yes |
| Introductory scuba dive | No | Yes |
The standard day tour includes return ferry transfers plus one activity – typically either snorkel gear hire or a glass-bottom boat ride. Lunch is included on some packages and not others, so make sure to check what is included in your booking before your trip.
One practical tip: if your package includes a choice of snorkel gear or a glass-bottom boat, the better approach is often to book the glass-bottom boat through the tour and hire snorkel gear separately at the island’s dive shop on arrival. That way, you get both!
Browse all Green Island tours to compare inclusions and find the right option.
What to do on Green Island
Snorkelling
Snorkelling is the main draw for most visitors, and Green Island makes it about as easy as it gets. The fringing coral reef wraps the island and is accessible directly from the beach – just wade in from the sand near the jetty, and you are on the reef within minutes.
What to expect in the water:
- Coral gardens starting just metres from the beach
- Parrotfish, surgeonfish, butterflyfish, and wrasse in steady numbers
- Giant clams sitting open in the shallows
- Sea turtles – a regular sighting that never gets old, particularly in the morning
- Clownfish tucked into anemones, if you look carefully among the coral
The water is shallow and calm, which makes it well-suited to first-time snorkellers and families with children. The northern beach has a lifeguard-patrolled swimming area, and floatation vests are available from the dive shop.
There is a second snorkelling area accessed via the island walking track. The conditions here are more variable – more seagrass, fewer coral formations – but it is quieter and worth exploring if you have time.
Tip: Mornings are consistently better for snorkelling. The water is calmer, visibility is clearer, and the reef is less disturbed. If snorkelling is a priority, get in the water early.
Glass-bottom boat tour
The glass-bottom boat departs from the jetty on a timed schedule throughout the day. You ride over the coral gardens, viewing the reef through a large glass panel in the hull while the crew points out what is below. Coral formations, fish, and the occasional turtle glide past right beneath your feet – it is one of those experiences that has kids (and plenty of adults) glued to the glass.
This 20 to 30-minute experience is particularly good for:
- Non-swimmers and young children
- Older visitors who prefer to stay dry
- Anyone who wants a different perspective on the reef
- Combining with snorkelling to see the reef from above and below
Seawalker Helmet Dive
The Seawalker helmet dive is Green Island’s signature activity – and one of those things you have to try to believe. You walk along the sandy bottom in a weighted helmet that keeps your head dry while fish swim right up to you at eye level. No swimming ability required, and you do not even get your hair wet.
The experience runs approximately 30 minutes and reaches a depth of around four metres. It costs extra on top of the day tour price and can be booked at the dive shop on arrival, but do it early in the day as spots are easy to fill up.
Rainforest walk
Green Island National Park’s walking track winds through the interior in a loop of around 400 metres. It is shaded, flat, and takes about 15 to 20 minutes at a relaxed pace.
The Pisonia forest overhead is something else – large, spreading trees with dense canopy, some of considerable age, with seabirds nesting in the branches during nesting season. It is a lovely contrast to the beach and reef, and the perfect thing to do during the hotter part of the afternoon when you want a break from the sun.
Introductory scuba diving
For visitors who want to go below the surface but are not certified, introductory scuba dives are available through the dive shop on the island. A qualified instructor stays with you throughout. Depths are shallower here than on the outer reef – around six to ten metres – but the coral and marine life are readily accessible.
All divers need to complete a medical questionnaire on the day. Certain conditions or medications may prevent participation, so check before you book.
Marineland Melanesia
A privately run museum and wildlife exhibit tucked away on the island, Marineland Melanesia is one of those unexpected finds. It houses one of the largest private collections of Melanesian tribal artefacts in the world, along with aquariums and live crocodile exhibits – including Cassius, reportedly the largest captive crocodile in Australia at over five metres long. Definitely worth a wander if you have the time.
Entry is paid separately on the island and is worth a visit if you have the time.
Facilities on Green Island
The resort on Green Island is open to day visitors, so you are well looked after. Here is what you can expect:
- Dining: A casual cafe for sandwiches, snacks, and drinks, plus a sit-down restaurant. Some tour packages include a buffet lunch. Food is resort-priced, so bringing snacks and a water bottle is worth considering.
- Showers and change rooms: Freshwater showers and change rooms are available near the resort pool. Bring a padlock if you want to secure a locker.
- Dive shop: Snorkel gear hire, Seawalker bookings, and scuba dive bookings are all handled here. Head straight there on arrival.
- Resort pool: Open to day visitors.
- Baby change facilities: Available on the island.
- Beach towels: Not provided on day tours – bring your own.
How to structure your day
With five to seven hours on the island, depending on your ferry times, here is how the day naturally tends to unfold:
- On the ferry: Confirm your glass-bottom boat time slot if included
- On arrival: Head straight to the dive shop – hire snorkel gear, book Seawalker if you are keen
- Morning: Get in the water early while conditions are at their best
- Mid-morning: Glass-bottom boat tour
- Around noon: Lunch at the resort cafe, restaurant, or buffet
- Early afternoon: Rainforest walk, beach time, or a second snorkel
- Mid-afternoon: Seawalker helmet dive (if booked), resort pool, Marineland
- Return ferry: Head back to the jetty for your booked departure
The morning is when you want to be in the water – do not leave snorkelling until after lunch. Conditions and energy are both better earlier, and you will be glad you made the most of it.
You may also like: Eco-friendly travel tips for visiting Fitzroy Island
Green Island vs the outer reef
Green Island is not the same experience as an outer reef day tour. Understanding the difference helps you choose the right one – or plan both.
| Green Island day trip | Outer reef day tour | |
| Distance from Cairns | 27 km – ~45 min ferry | 50-80 km – 60-90 min boat |
| Snorkelling depth | Very shallow, 1-4 m off the beach | 3-15 m from the vessel |
| Coral | Good fringing reef | More extensive outer formations |
| Marine life | Turtles and reef fish common | Higher species variety |
| Beach time | Full day on the island | Minimal – vessel or pontoon-based |
| Facilities | Resort, cafe, rainforest walk | Vessel only (or pontoon) |
| Best for | Families, relaxed reef day, mixed activities | Snorkelling/diving focus, maximum reef time |
Green Island suits visitors who want a mix of reef, beach, and land activities in a relaxed setting. The outer reef suits those who want maximum time in the water with access to more dramatic coral systems. Many visitors to Cairns do both on separate days – the two experiences genuinely complement each other.
What to Bring
- Swimwear worn under your clothes
- Reef-safe sunscreen (zinc-based to protect the coral)
- Rash vest or Lycra suit for sun and stinger protection
- Beach towel
- Hat and sunglasses
- Water bottle – refill points are available on the island
- Waterproof phone case or underwater camera
- Cash or card for extras at the dive shop, food, and drinks
Leave valuables at your hotel. You will spend most of the day in and around the water.
Frequently Asked Questions
Is Green Island good for snorkelling?
Yes – the fringing reef starts metres from the beach in calm, shallow water. It is well suited to first-time snorkellers, families with children, and anyone who finds boat-entry snorkelling on the outer reef intimidating.
Is Green Island suitable for children?
It is one of the most family-friendly reef experiences from Cairns. Beach-entry snorkelling, a lifeguard-patrolled swimming area, the glass-bottom boat, a flat and shaded rainforest walk, baby change facilities, a pool, and cafe options all make it a reliable choice for families.
Do you need to book in advance?
Booking ahead is recommended, particularly during peak season (June to October) and school holidays when ferries fill up. Securing a booking before your trip day avoids disappointment.
Is lunch included?
It depends on the package. Some tours include a buffet lunch, others do not. Check your inclusions at the time of booking. Food is available to purchase at the resort cafe and restaurant.
Plan your Green Island day trip
Green Island delivers one of the most accessible reef experiences from Cairns – a full day of snorkelling, beach time, and island exploring without the long offshore boat ride of an outer reef tour. It is the kind of day trip where first-timers feel comfortable and experienced reef visitors still find plenty to enjoy.The team at Cairns Discovery Tours has nearly 30 years of experience matching visitors with the right Green Island tour. Browse all Green Island tours to compare options and find the right fit. If you need help choosing, call us on (07) 4028 3567 or send us an email, and we will talk you through what is included.
