Seeing the Great Barrier Reef from Cairns as a Non-Swimmer
Underwater observatories, semi-subs, glass-bottom boats, flotation and scenic flights: the Cairns reef trips that work when you can't swim.
You do not need to swim to see the Great Barrier Reef from Cairns. The outer reef pontoons have underwater observatories, semi-submersibles and glass-bottom boats, so you can watch the coral and fish through glass while the rest of your group snorkels. Scenic flights show you the reef from above, and several boats hand out flotation vests and guide nervous snorkellers by the hand.
The one thing to avoid is booking a snorkel-only boat. Some of the best-reviewed half days say plainly that they do not suit non-swimmers.
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Three ways to see the reef without getting wet
An underwater observatory is a viewing room below the waterline of a pontoon, with windows onto the reef. You watch fish swim past at eye level, completely dry.
A semi-submersible is a boat whose lower deck sits under the surface, with windows along both sides. A guide gives a commentary as it moves slowly over the coral.
A glass-bottom boat is a small boat with viewing panels in the floor. It covers more ground than the observatory and gets you over shallow coral.
The pontoon days from Cairns bundle all three. The Premium Five-Hour Outer Reef Pontoon Experience, at $228 and rated 4.7, includes the underwater observatory, a semi-submersible tour and a glass-bottom boat, plus five hours at the reef, lunch on the pontoon and marine naturalist talks. One guest who is terrified of the ocean wrote that the semi-sub and glass-bottom boat were incredible, with many turtles seen. Our breakdown of the five-hour pontoon covers the day.
The Outer Great Barrier Reef Pontoon Day at $200 moors at Moore Reef with the same three, plus a fish feeding presentation, a waterslide and life jackets with the snorkel gear. One family with a toddler praised the glass-bottom boat and the fenced splash area for little ones. See our Moore Reef pontoon breakdown and the pontoon tours page.
One caution: semi-submersibles can be stood down when the wind is up. One pontoon guest saw the reef only from the glass-bottom boat on a murky day, and another listing says its semi-sub runs subject to wind. Treat the semi-sub as a likely extra, and the observatory and glass-bottom boat as the backbone of the day.
Pontoons that add an island
Two pontoon days pair the reef with an island, which gives a non-swimmer a beach and a walk as well as the viewing windows.
The Green Island and Outer Reef Pontoon Day Trip, $219, spends two hours on Green Island and three hours at the Moore Reef platform, with a semi-submarine tour, an underwater observatory and buoyancy vests included. Our breakdown has the timings.
The Great Barrier Reef and Fitzroy Island Boat Tour, $200, starts at Moore Reef with a glass-bottom boat, a semi-submersible, the observatory and an enclosed ocean pool for toddlers, then moves on to Fitzroy Island for lunch and self-guided walks. See the Fitzroy and reef breakdown.
Snorkelling when you can’t swim
Plenty of non-swimmers do snorkel on the reef, floating face-down in a vest with a guide close by. It is a big step for some people and a highlight for others. Choose a boat that plans for it.
The Premium Catamaran Cruise, $193 and rated 4.8 from 3,877 reviews, includes flotation belts and a guided snorkel tour. One group of non-swimmers wrote that the crew kept them completely safe while helping them explore. Our breakdown covers the rest.
The Michaelmas Cay Full-Day Snorkel, $202, lands you on the beach of a seabird cay, where you snorkel from the sand in protected shallow water with a buoyancy vest. A 30-minute semi-submarine or glass-bottom boat tour is included. Landing is allowed only on a roped beach area between 9:30am and 3pm. See our Michaelmas Cay breakdown.
The Frankland Islands River, Rainforest and Reef Tour, $182 and rated 4.8, offers a choice of guided beach-to-reef snorkelling or a semi-sub expedition, and includes pickup from selected Cairns hotels. Our breakdown has more.
Tell the crew when you board that you cannot swim, so they can fit you with a vest and keep an eye on you. On the Silverswift three-site day a qualified lifeguard supervises the water.
Trips that are not for non-swimmers
Several popular boats list non-swimmers among the guests they do not suit. That includes the Half-Day Snorkelling Tour (our breakdown), the All-Inclusive Half-Day Trip (our breakdown), the Small-Group Snorkelling Tour (our breakdown) and the 2-Day Liveaboard (our breakdown). They are excellent trips for swimmers, with nowhere dry to watch the reef from. The half-day and small-group boats also list people prone to seasickness or over 65 as unsuitable.
Green Island by glass-bottom boat
For the gentlest reef day, go to Green Island, about 45 minutes from Cairns by fast catamaran. It is a coral cay and national park with a beach, a rainforest boardwalk and, for Great Adventures passengers, a swimming pool.
The Green Island with Snorkelling and Glass-Bottom Boat (our breakdown) trip, $109, includes both a glass-bottom boat coral viewing tour and snorkel gear, with up to seven hours on the island. The Green Island Full-Day and Half-Day Cruise (our breakdown) starts at $79 cruise-only and lets you add a glass-bottom boat or snorkel gear. The Full-Day Green Island Cruise (our breakdown) from $77 includes snorkelling or a glass-bottom boat, with a semi-sub as an option. Fitzroy Island trips offer a glass-bottom boat option too. Our Green Island and Fitzroy Island pages compare them.
Green Island also has helmet walks. The Green Island and Seawalker Helmet Dive Combo, $203, adds one Seawalker helmet dive, a walk on the ocean floor. It has a minimum age of 12, and certain medical conditions, medications or height restrictions can rule you out, so check with the operator before booking. Seawalker is also sold as an extra at the Moore Reef pontoon.
From the air
A scenic flight shows the reef’s shape and scale in a way no boat can. The Outer Edges Scenic Flight, from $140 and rated 4.9 from 3,562 reviews, flies over Green Island, Arlington Reef and Upolu Reef with a window seat and pilot commentary. Its 30-minute flight has a 100 kg weight limit per passenger and the 40-minute flight 115 kg. The 40-Minute Window-Seat Scenic Flight (our breakdown) at $203 guarantees window seats in a high-wing plane. Read our scenic flights page or the Outer Edges breakdown.
For a mixed group, the Reef Cruise and Scenic Helicopter Flight (our breakdown), $309, gives swimmers two outer reef sites and everyone a 10-minute helicopter flight at Hastings Reef.
Before you book
Check mobility notes. The coral cay cruise asks that you can step from the main boat into its glass-bottom boat, and the sailing trip to Green Island asks that you manage a step ladder. If mobility is a concern, ask the operator how you board the pontoon or tender.
Bring seasickness remedies if you need them. Pontoon boats cross open water for about 1.5 hours each way, and our guide on how far the reef is covers the crossing. For the whole range of trips, see which reef tour suits you.
Frequently asked questions
Can you see the Great Barrier Reef from Cairns if you can’t swim?
Yes. Outer reef pontoons such as the Premium Five-Hour Pontoon Experience include an underwater observatory, a semi-submersible and a glass-bottom boat. Green Island glass-bottom boats and scenic flights also need no swimming.
What is the best reef tour from Cairns for non-swimmers?
A pontoon day. The five-hour pontoon at $228 and the Moore Reef pontoon day at $200 both include all three dry ways to see the reef, and both welcome first-time snorkellers.
Can non-swimmers snorkel on the Great Barrier Reef?
Many do, wearing a flotation vest and staying close to a guide. Pick a boat that includes flotation and a guided snorkel, such as the Premium Catamaran Cruise, and tell the crew you cannot swim.
Is there a glass-bottom boat from Cairns?
Yes, at Green Island, on Fitzroy Island trips and at the outer reef pontoons. The Green Island trip at $109 includes a glass-bottom boat tour and snorkel gear.
Which Cairns reef tours don’t suit non-swimmers?
Snorkel-only boats, including the half-day snorkelling tours, the small-group snorkelling tour and the two-day liveaboard, list non-swimmers as unsuitable.
Travelling with non-swimmers? Check availability on the five-hour pontoon, with its observatory, semi-sub and glass-bottom boat.
Two Outer Reef Sites, One Day on a Catamaran
Snorkelling gear and a guided snorkel tour, a chef-prepared lunch, morning and afternoon tea, and a marine life talk on board. Rated by more than 3,800 guests, with free cancellation.
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