Semi-Submarine Experience
Semi-Submarine Experience in Australia Tours
The Semi-Submarine Experience at Green Island offers visitors an exciting way to explore the underwater world of the Great Barrier Reef while remaining comfortably above the water. The semi-submersible vessel features an underwater viewing area, allowing passengers to observe the reef from below the surface.
During the experience, visitors can see coral formations, tropical fish and other marine life in the clear waters surrounding Green Island. It is a convenient option for travellers who want to experience the reef without participating in snorkelling or scuba diving.
The experience combines underwater sightseeing, marine-life observation and tropical island scenery, making it a popular activity for families and visitors looking for an accessible Great Barrier Reef experience.

What is included & excluded
- Entry: The Semi-Submarine Experience at Green Island is a paid marine activity and is generally offered as part of selected Green Island cruise packages or as an additional experience.
- Booking: Advance booking is recommended, especially during weekends, school holidays, and peak tourist periods. Availability may be limited.
- Duration: The semi-submarine experience generally lasts around 30–45 minutes, depending on the selected package and operating conditions.
- Boarding: Guests must arrive at the designated boarding point before the scheduled departure time. Late arrival may result in missing the experience.
- Marine Viewing: The experience provides an opportunity to observe coral formations, tropical fish, and other marine life from below the waterline without requiring participants to swim or snorkel.
- Safety: Guests must remain seated or in designated areas and follow all crew instructions throughout the experience.
- Photography: Photography and video recording are generally permitted for personal use, subject to crew instructions and safety requirements.
- Accessibility: Accessibility depends on the vessel, boarding arrangements, and individual mobility requirements. Guests requiring assistance should confirm suitability before booking.
- Children: Children should remain under adult supervision and follow all crew and safety instructions.
- Weather Conditions: The experience may be delayed, modified, or cancelled because of rough seas, strong winds, storms, poor visibility, or other marine conditions.
- Marine Environment: Guests must not touch, feed, or disturb marine life and should not remove coral, shells, or other natural materials.
- Cancellation/Refund: Cancellation and refund conditions depend on the specific cruise package or operator booking terms. Weather-related cancellations are handled according to the operator's applicable conditions.
- Changes to Experience: The vessel, departure time, viewing route, or experience may change due to weather, marine conditions, safety requirements, maintenance, or operational circumstances.
- Important: The Green Island Semi-Submarine Experience offers a convenient way to explore the underwater world of the Great Barrier Reef while remaining inside a specially designed vessel. Visitors should check the latest schedule and availability before booking.
Cancellation policy
Terms & conditions
- Admission is subject to a valid ticket or confirmed booking.
- The experience is subject to availability and scheduled departure times.
- Guests should arrive at the designated meeting point before the scheduled boarding time.
- Participants must follow the instructions of the captain, crew, guides and authorised personnel.
- Guests must remain within designated passenger areas and must not enter restricted or operational areas.
- All passengers must comply with maritime safety requirements and emergency procedures.
- Children must remain under the supervision of an accompanying adult.
- Guests should exercise caution when boarding, disembarking and moving around the vessel.
- The experience may involve stairs, narrow passages or limited seating, depending on the vessel used.
- Guests with mobility or accessibility requirements should contact the operator before booking to confirm suitability.
- Visitors must not touch, feed, chase or deliberately disturb marine life.
- Guests must not damage or interfere with coral, reef structures, marine life or vessel equipment.
- Photography for personal use is generally permitted, subject to operator and safety restrictions.
- Commercial photography, professional filming or organised photo shoots may require prior permission.
- The semi-submarine experience may be modified, delayed, substituted or cancelled because of weather, tides, sea conditions, marine conditions, vessel maintenance or safety requirements.
- Underwater visibility can vary naturally depending on weather, tides and water conditions, and cannot be guaranteed.
- The operator does not guarantee sightings of any specific marine species or reef conditions.
- Visitors are responsible for their personal belongings.
- Cancellation and refund conditions depend on the specific Green Island tour package and booking provider.
- If the semi-submarine experience is cancelled or unavailable due to weather, sea conditions, operational or safety reasons, alternative arrangements or refunds will be handled according to the applicable operator's terms.
- Late arrival or failure to join the scheduled experience may result in loss of the booking without refund, subject to the operator's conditions.
- If the experience is booked as part of an organised Green Island tour, the tour operator's cancellation and refund policy will apply.
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