Spend a full day on the outer Great Barrier Reef from Cairns aboard a fast catamaran. Snorkel sheltered lagoons, visit an underwater observatory, and learn reef ecology directly from on-board marine biologists.
More ways to explore the area's outdoor wonders
You step off the catamaran onto a broad aluminum pontoon and the ocean opens like a moving map beneath you — patches of electric coral, darting schools of fish, and a blue that deepens toward the horizon.
Difficulty
easy
Duration
8 hours
Fitness Level
Suitable for most fitness levels; you should be comfortable in the water and able to climb ladders on and off the pontoon.
Wildlife
History
The reef is a product of reef growth over thousands of years; local Gimuy Walubara Yidinji and Yirrganydji peoples have cultural ties to these sea country and its resources.
Conservation
This section of reef is inside the Great Barrier Reef Marine Park and managed for tourism and research; visitors are asked to follow no‑contact rules and use reef‑safe products to reduce impact.
Reserve your spot on the Snorkel & Dive the Reef: Sustainable, Scientific & Cultural Tour today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring reef‑safe sunscreen
Use mineral or certified reef‑safe sunscreen and reapply in the shade to protect corals and marine life.
Choose a well‑fitting mask
Even though masks are supplied, a personal mask reduces leakage and fogging for longer, more comfortable snorkels.
Manage seasickness proactively
Take motion‑sickness medication or use patches before boarding if you’re prone to nausea—the crossing is about 1.5 hours each way.
Time the marine biologist sessions
Plan your snorkeling around the educator talks for the best chance to see highlighted species and learn local ID tips.
Swimsuit and quick‑dry towel
Basic swimwear and a towel are needed for repeated entries and for lounging on the sundeck.
summer
Reef‑safe sunscreen
Protects your skin and reduces damage to coral—mandatory for responsible reef visits.
summer
Personal snorkel mask
A well‑fitting mask improves comfort and visibility compared with some rental gear.
Light wetsuit or rash guard
Provides warmth and sun protection during cooler months or long surface swims.
winter