Australia is surrounded by some of the world's best snorkelling destinations — and within a few hours' flight there are reefs and marine environments that rival anything in the Caribbean or Red Sea. For Australian travellers who want to combine a beach holiday with exceptional underwater experiences, these are the destinations that deliver.
1. Raja Ampat, Indonesia — The World's Best Snorkelling
Raja Ampat in West Papua has the highest recorded marine biodiversity on earth — more fish, coral and invertebrate species than anywhere else in the world's oceans. Snorkelling at Wayag, Piaynemo and the Dampier Strait provides encounters with pygmy seahorses, wobbegong sharks, walking sharks (yes, they walk), massive schools of fish, extraordinary coral formations and manta rays. Getting there requires flying to Sorong (via Bali) and then taking a boat to your liveaboard or resort — but the experience completely justifies the effort. Best season: October to April.
2. Similan Islands, Thailand — Best Water Clarity in Southeast Asia
The Similan Islands National Park (9 islands off Khao Lak, 2.5 hours from Phuket) has some of the best water visibility in Southeast Asia — often 30–40 metres. The combination of clear water, diverse coral and abundant fish life including whale sharks, manta rays and turtles makes it exceptional. The national park is open October to May only — closes June to September for marine protection. Day trips from Khao Lak or Phuket cost AUD $90–150. Liveaboard trips (2–3 nights) provide more in-water time: AUD $400–700.
3. Nusa Penida, Bali — Manta Rays from the Shore
Manta Point on Nusa Penida's south coast is one of the world's most reliable locations for snorkelling with manta rays. The mantas feed in the currents created by the cold upwellings and are present year-round (peak: April–October). The famous underwater Manta Point mola mola (ocean sunfish) cleaning station is active July–October. Reach Nusa Penida by fast boat from Sanur (AUD $20 return). Day snorkelling tours from Bali cost AUD $30–60 including boat, guide and equipment.
4. Great Barrier Reef, Australia — The World's Largest Reef System
Australia's own backyard contains the world's largest coral reef system — 2,300km of reef off Queensland's coast. The outer reef (accessed by boat from Cairns, Port Douglas or the Whitsundays) provides the best snorkelling — clearer water and more pristine coral than the inner reef areas. Full-day reef trips from Cairns: AUD $120–200 including 2–3 snorkel stops and equipment. The Cod Hole (Coral Sea, accessible by liveaboard) is one of the world's great diving and snorkelling sites.
5. Gili Islands, Indonesia — Best for Turtles
The Gili Islands (Trawangan, Air, Meno) off Lombok's northwest coast have extraordinary turtle populations. Green sea turtles are visible from the beach on Gili Meno and at the Biorock turtle sanctuary on Gili Trawangan. Snorkelling directly from the beach — no boat required. The water is typically 20–25m visibility. The Gili Air house reef has excellent coral. Accommodation from AUD $30/night on Gili Air and Gili Meno. Reach via fast boat from Bali (2 hours, AUD $40–70) or Lombok (30 minutes).
6. Komodo National Park, Indonesia — Diverse Mega-Fauna
The same national park famous for Komodo dragons also has extraordinary snorkelling and diving in the nutrient-rich waters of the Flores Sea. Manta rays, reef sharks, vast schools of fish and exceptional coral health due to strong currents that limit tourist boat numbers. Liveaboard trips from Labuan Bajo: AUD $300–600 for 2–3 nights. Day trips from Labuan Bajo: AUD $80–150.
Essential Snorkelling Gear for Australian Travellers
The single most impactful personal gear investment: a prescription snorkel mask if you wear glasses (AUD $80–150 from dive shops in Australia). Also bring your own snorkel rather than relying on rental — rental snorkels are shared, poorly maintained and often uncomfortable. A quality dry snorkel (AUD $30–60) and fitted mask (try on in store) transform the snorkelling experience. Rashguard for sun protection in tropical snorkelling destinations — 2 hours face-down in tropical water without protection causes severe back burns. Reef-safe sunscreen only — standard sunscreen is banned in multiple marine protected areas and actively damages coral.
What Makes a Great Snorkelling Destination for Australians
The ideal Australian snorkelling destination combines accessibility (manageable flight time and cost), water visibility (30+ metres is exceptional, 15+ metres is very good), reef health (significant coral bleaching has affected many destinations), and safety (manageable currents, minimal boat traffic in snorkelling zones). Temperature matters less than visibility -- a wetsuit handles cooler water but nothing fixes poor visibility caused by sediment or algae blooms.
Planning and Equipment
Bringing your own snorkel mask is strongly recommended over hiring resort equipment. A quality mask with a silicone skirt (Cressi, Mares, Scubapro -- AUD $60-150) creates a better seal than rental equipment and eliminates the hygiene concerns of sharing masks. Prescription lens inserts are available for snorkellers who wear glasses. A rashguard or short wetsuit (AUD $40-80) provides UV protection and warmth in water below 26C -- essential for multi-hour snorkelling sessions. Reef-safe sunscreen (no oxybenzone or octinoxate) is required at many marine parks and is simply the right choice for reef environments regardless of requirements.
Booking Snorkelling Tours
For destinations where snorkelling requires a boat trip (Coral Bay, Tubbataha, Raja Ampat), compare operators on Viator and GetYourGuide for price transparency but also check directly with operators -- some run identical tours at 15-20% lower prices when booked directly. Look for operators with maximum 12-15 person boats for better snorkelling quality -- large catamaran day trips with 60+ passengers create crowded and disturbed reef conditions. Check recent reviews specifically for water clarity and reef health on the dates you''re considering -- conditions vary seasonally.
The Great Barrier Reef for Snorkellers
The Great Barrier Reef remains one of the world's great snorkelling destinations despite the headline bleaching events, which have affected the outer reef more than the inshore reef areas that most visitors access. The ribbon reefs north of Cairns (accessible via liveaboard from Cairns, approximately AUD $350-600 for 3 days) retain exceptional coral health and visibility. Agincourt Reef via Quicksilver Cruises from Port Douglas (AUD $250-300 day trip) is one of Australia's most accessible outer reef experiences with consistently high water quality. For self-guided snorkelling, Lady Musgrave Island in the Bunker Group (accessible by boat from Town of 1770, AUD $180-220 return) is a pristine coral cay with a lagoon of exceptional clarity. The Coral Sea north of Cairns and the Coral Triangle in the Coral Sea off Cape Tribulation have both been largely spared the bleaching events that affected the southern reef sections.