Underwater Helmet Dive Green Island from Cairns

Walk underwater without getting wet.

The Seawalker helmet dive on Green Island is an underwater walking experience 45 minutes from Cairns by fast catamaran, where you descend to the seafloor in a helmet that keeps your head and hair dry while you walk among tropical fish and coral. The full-day combo includes return transport, island access with pool and facilities, and your choice of a glass-bottom boat tour or snorkelling gear. Minimum age is 12. A medical questionnaire is required before diving.

Step-by-step itinerary

Green Island and Seawalker experience

• Travel 45 minutes to Green Island
• Walk underwater with helmet dive
• Choose glass bottom boat or snorkel
• Relax at pool bar and restaurant

The experience

The day starts with a morning departure from Cairns aboard Great Adventures' fast catamaran. You get tea or coffee served onboard during the 45-minute crossing to Green Island, a 6000-year-old coral cay in the Great Barrier Reef Marine Park and the only one with a rainforest. Once you arrive, the island's day visitor facilities are yours to use: a pool exclusive to Great Adventures passengers, a restaurant, a bar, and refreshment options.

The Seawalker helmet experience is the centerpiece. You walk on the seafloor at a specially selected site minutes offshore, wearing a helmet that supplies air so your head stays completely dry and you can even keep your glasses on. Professional underwater guides supervise the dive at all times. You're surrounded by colourful tropical fish and coral, moving at your own pace on the island's seafloor. A professional photographer captures images underwater. These are available to purchase afterward. The experience is designed for non-swimmers (no prior diving certification or swimming ability required), though you do need at least moderate physical fitness and must complete a medical questionnaire before participating.

After the helmet dive, you choose how to spend the rest of your day on the island: either a glass-bottom boat tour to see the reef from above the water, or snorkelling gear to explore on your own. You can also take a self-guided walk around the island itself. Departure times vary. You can leave Cairns at 8:30am or 10:30am and return at either 2:30pm or 4:30pm, depending on which option you select at checkout.

What’s included

• Return fast catamaran transport from Cairns.
• Seawalker helmet dive on Green Island with professional guide supervision.
• use of the island swimming pool exclusive to Great Adventures guests.
• access to island day visitor facilities including restaurant and bar.
• choice of glass-bottom boat tour or snorkelling equipment.
• self-guided island walk.
• morning tea and coffee served onboard before departure.

Options for this experience

4 options

5 hours on the island, departing at 10:30 amGuide in English · 10:30Package deal: includes boat transfer, Seawalker and a choice of snorkel gear or glass-bottom boat; departs at 10:30 am or 4:30 pm (arrives CNS at 5:15 pm)

5 hours on the island, departing at 8:30 amGuide in English · 08:30Package deal: includes boat transfer, Seawalker and a choice of snorkel gear or glass-bottom boat; departs at 8:30 am or 2:30 pm (arrives CNS at 3:15 pm)

7 hours on the island, departing at 8:30 amGuide in English · 08:30Package deal: includes boat transfer, Seawalker and a choice of snorkel gear or glass-bottom boat; departs at 8:30 am or 4:30 pm (arrives CNS at 5:15 pm)

3 hours on the island, departing at 10:30 amGuide in English · 10:30Package deal: includes boat transfer, Seawalker and a choice of snorkel gear or glass-bottom boat; departs at 10:30 am or 2:30 pm (arrives CNS at 3:15 pm)

You'll see the exact price of each option when you check availability.See dates and prices

Before you book

Days and timesEvery dayDepartures at 08:30 and 10:30

Book up to3h before

AgesAdult (15 to 90 years) · Child (12 to 14 years) · Under 12: can't be booked

GroupUp to 10 · max 8 per booking

Live guideEnglish

Meeting point and pickupNo hotel pickup: you go to the meeting point. Ends back at the starting point.

Cancellation and refundsFree cancellation up to 24 h before the start. After that, no refund.

Prices and times updated today

Good to know

Moderate physical effortNot recommended with heart problemsNot recommended with back problems

Operated by The Quicksilver Group

Is this one for you?Choose the 8:30am departure if you want the full five to nine hours on the island and prefer an earlier start. The 10:30am departure suits a later morning. Pick the 4:30pm return if you want maximum time on Green Island, or the 2:30pm return for an earlier finish to your day.

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Top questions

Can children come?

Yes. Ticket types: Child (12 to 14 years). Children under 12 can't be included in the booking.

What exactly happens during the Seawalker helmet dive?

You descend to the seafloor wearing a helmet that supplies air, keeping your head and hair completely dry. You walk on the island's seafloor surrounded by tropical fish and coral at a site minutes offshore, fully supervised by professional underwater guides. No swimming ability or diving certification is required.

Can I take photos underwater during the helmet dive?

You cannot bring a camera underwater yourself due to safety procedures, but a professional photographer will take photos of you during the dive, and these images are available for purchase afterward.

What's included in the full day on Green Island besides the helmet dive?

The combo includes return fast catamaran transport from Cairns, use of the island's swimming pool (exclusive to Great Adventures guests), access to day visitor facilities like the restaurant and bar, a self-guided island walk, and your choice of either a glass-bottom boat tour or snorkelling equipment. Morning tea and coffee are served onboard before departure from Cairns.

How long is the boat ride from Cairns to Green Island?

The fast catamaran takes 45 minutes each way between Cairns and Green Island.

What's the minimum age for the Seawalker helmet dive?

The minimum age is 12 years old. All participants must complete a medical questionnaire, and certain medical conditions or medications may prevent participation. Contact the supplier if you have health concerns.

Do I need to be a strong swimmer to do the helmet dive?

No. The Seawalker experience is designed for non-swimmers. You walk on the seafloor in a helmet with air supply, so swimming ability is not required, though you do need at least moderate physical fitness.