Ultimate Guide to Ung Kong Wan & Bluff Island, Hong Kong - Splitdyboat
( Estimated reading time: 3 minutes) This blog will introduce Ung Kong Wan on Bluff Island of Hong Kong UNESCO Global Geopark as one of the most beautiful and signature destinations in Hong Kong Geopark. It will help readers understand what makes the area special, what they can do there, and why Splitdyboat’s snorkeling, coasteering, and beach tours are the best ways to experience it.
1. Where is Ung Kong Wan?
Ung Kong Wan is a picturesque, U-shaped bay located on the north side of Bluff Island (also known locally as Sha Tong Hau Shan or Ung Kong) in Sai Kung, Hong Kong . Bluff Island is part of the Ung Kong Group, which also includes Basalt Island and Wang Chau—all within the Sai Kung Volcanic Rock Region of the Hong Kong UNESCO Global Geopark .
One of the most remarkable features of Bluff Island is its 140-meter-high sea cliffs—the highest in Hong Kong—which fringe the southeastern coast . The island itself is elongated, oriented northeast to southwest, and its dramatic volcanic geology is characterized by rhyolite rock formations from the Cretaceous period .
Because Bluff Island is not accessible by public transport, the only practical way to reach Ung Kong Wan is by joining a guided boat tour or chartering a private speedboat . Splitdyboat offers convenient round-trip speedboat transfers from Sai Kung, taking the hassle out of planning and ensuring a safe, licensed journey .
2. Why Ung Kong Wan Is Worth Visiting
Tucked away on the northern coast of Bluff Island in Sai Kung, Ung Kong Wan (甕缸灣) is one of Hong Kong's most stunning and unspoiled natural bays . Part of the Hong Kong UNESCO Global Geopark, this hidden gem offers a rare combination of dramatic volcanic rock formations, crystal-clear turquoise waters, and vibrant marine life . Unlike the crowded beaches closer to the city, Ung Kong Wan feels like a secret paradise—a place where 140-million-year-old hexagonal rock columns meet a thriving underwater ecosystem .
Whether you're an adventure seeker looking to swim through sea caves, a snorkeling enthusiast eager to explore Hong Kong's official coral areas, or a family wanting a peaceful day on a white-sand beach, Ung Kong Wan has something for everyone . In this guide, we'll show you exactly what makes this destination so special, what you can do there, and why Splitdyboat's guided tours offer the safest and most unforgettable way to experience it.
3. What Makes Ung Kong Wan Special?
So, what sets Ung Kong Wan apart from Hong Kong's other coastal destinations? Here's why it's considered one of the most signature and beautiful spots in the Geopark:
🏝️ Crystal-Clear Waters & Soft White Sands
Ung Kong Wan is renowned for its exceptionally clear, turquoise waters and soft, powdery white sand beach . The sheltered bay offers calm conditions, making it perfect for swimming, snorkeling, and relaxing. Visitors often describe the water visibility as outstanding—ideal for exploring the underwater world .
🪸 One of Hong Kong's Six Official Coral Areas
Ung Kong Wan is officially designated as one of Hong Kong's six most important coral areas . The bay features a vibrant fringing coral community with diverse hard and soft corals, teeming with colorful reef fish . Recent conservation efforts, including no-anchoring zones, have helped protect and even increase coral coverage in the area .
🌋 Dramatic Volcanic Coastline
The bay is surrounded by towering hexagonal volcanic rock columns—the same 140-million-year-old formations that make Hong Kong's Geopark world-famous . The contrast between the ancient, geometric rock pillars and the calm blue sea creates a truly breathtaking landscape .
🌊 The Bluff Island Tunnel Cave
Just off the coast of Ung Kong Wan lies the Bluff Island Cave (沙塘口洞) —a spectacular 30-meter-long sea tunnel that cuts right through the island . This natural tunnel is wide enough for boats to pass through and is one of the Four Sea Arches of the East Seas . Exploring this cave—whether by speedboat, kayak, or swimming—is an unforgettable experience .
🚗 A Hidden-Gem Feel
Because it's only accessible by boat, Ung Kong Wan remains uncrowded and peaceful, even on weekends . It offers a genuine escape from Hong Kong's urban hustle, allowing visitors to connect with nature in a serene, untouched setting.
4. Ung Kong Wan Snorkeling Tour
Duration: ~2.5 hours | Price: from HKD 480
For those who want to discover the underwater wonders of Ung Kong Wan, Splitdyboat's Guided Snorkeling Tour is the perfect choice .
What You'll Experience
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Dive into one of Hong Kong's official coral areas—swim among vibrant hard and soft corals, colorful reef fish, and other marine life .
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Explore the crystal-clear, sheltered waters of Ung Kong Wan, which offer excellent visibility and calm conditions ideal for snorkelers of all skill levels .
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Your professional guide will lead the way, point out interesting marine species, and ensure your safety throughout the experience .
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All snorkeling gear (mask, snorkel, fins) and life jackets are provided.
Who Is This Tour For?
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First-time snorkelers who want a safe, guided introduction to the underwater world.
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Families with children (minimum age 6) and casual travelers looking for a gentle water activity.
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Nature lovers who want to experience Hong Kong's marine biodiversity up close.
Snorkeling Tip: Look out for the sunken car submerged near the island—a mysterious relic believed to have been dumped by smugglers decades ago !
5. Ung Kong Wan Coasteering Tour
Duration: ~2 hours | Price: HKD 580
For the more adventurous, Splitdyboat's Coasteering Experience takes you beyond the beach and into the heart of Bluff Island's volcanic coastline .
What You'll Experience
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Swim through the Bluff Island Cave—a 30-meter sea tunnel that cuts through the island . You'll enter at the west entrance and emerge on the other side, surrounded by towering hexagonal rock columns .
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Scramble over rugged volcanic rock formations and explore hidden sea caves and channels that are only accessible from the water .
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Optional cliff jumps for adrenaline seekers (all jumps are voluntary and supervised by guides).
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All safety gear (helmet, life jacket, gloves) is provided, and a professional guide leads the group .
Who Is This Tour For?
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Active travelers and adventure seekers who want a physical challenge.
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Those with basic swimming ability and water confidence (the tour is designed for beginners).
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Travelers who want to get up close with Hong Kong's volcanic geology in a way that boat-only tours simply can't match.
Coasteering Tip: This tour includes a speedboat transfer from Sai Kung, so you can enjoy the adventure without worrying about logistics .
6. Ung Kong Wan Beach Tour
For those who prefer a more relaxed experience, Splitdyboat's beach-focused tours offer a perfect blend of sightseeing, swimming, and leisure .
What You'll Experience
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Enjoy free time on the soft white sands of Ung Kong Wan—swim, sunbathe, or simply soak in the stunning scenery .
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Snorkel at your own pace in the crystal-clear waters near the shore (gear can be provided).
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Take in the panoramic views of the surrounding volcanic cliffs and hexagonal rock columns.
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Depending on the package, you may also enjoy a scenic speedboat tour around Bluff Island to view the sea caves and coastline .
Who Is This Tour For?
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Families with young children or elderly members who want a safe, gentle day out.
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Casual travelers who prefer leisure over adrenaline.
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Photography enthusiasts seeking the perfect shot of Hong Kong's breathtaking coastline.
👉 Ung Kong Wan Beach Tour + UNESCO Geopark Sightseeing
7. Which Ung Kong Wan Tour Should You Choose?
Still not sure which experience suits you best? Here's a quick guide to help you decide:
| Tour Type | Best For | Activity Level |
|---|---|---|
| Snorkelling | Nature lovers, families, first-timers | Low – gentle swimming in calm waters |
| Coasteering | Adventurers, active travellers | Low – swimming, climbing, optional jumps |
| Beach Tour | Families with seniors/young kids, casual visitors | Very low – relax and enjoy the views |
Can't choose? Many visitors combine experiences! Splitdyboat offers Combo Packages that let you enjoy both sightseeing and snorkeling, or sightseeing and coasteering, all in one seamless trip .
8. Best Time to Visit Ung Kong Wan
The best time to visit Ung Kong Wan depends on what you want to do:
| Season | Conditions | Recommended Activities |
|---|---|---|
| Summer (May–October) | Warm, calm seas, excellent visibility | Snorkeling, swimming, coasteering, beach relaxation |
| Autumn–Winter (October–April) | Cooler, stable weather, less chance of storms | Yacht Sightseeing, photography |
For the clearest water and best snorkeling conditions, summer and early autumn are ideal. However, tours run weather permitting, and safety is always the priority. Before booking, check the weather forecast and sea conditions .
9. Why Choose Splitdyboat?
When it comes to exploring the Hong Kong UNESCO Global Geopark, Splitdyboat is the trusted specialist .
✅ Local Expertise
Splitdyboat's guides have deep knowledge of the Geopark's geology, marine life, and history. They'll bring the landscape to life with fascinating insights .
✅ Safety & Convenience
✅ Comprehensive Options
Whether you want to snorkel, coasteer, sightsee, or all three, Splitdyboat offers a range of tours to suit every traveler .
✅ Rave Reviews
Visitors consistently praise Splitdyboat for their organized, fun, and safe experiences. The brand is frequently recommended as the best way to explore Bluff Island and its surrounding wonders .
10. Conclusion: Experience Ung Kong Wan with Splitdyboat
Ung Kong Wan on Bluff Island is nothing short of a natural masterpiece. From the towering hexagonal rock columns and the dramatic Bluff Island Cave to the vibrant coral reefs and serene white-sand beach, it offers a side of Hong Kong that few visitors ever get to see.
With Splitdyboat, you don't just visit—you experience. Whether you choose to snorkel through Hong Kong's most beautiful coral gardens, coasteer through ancient sea tunnels, or simply relax on the beach, you'll leave with memories that last a lifetime.
Ready to explore? 🌋🚤
Book your Splitdyboat tour today and discover the raw beauty of Ung Kong Wan—Hong Kong's best-kept secret.
📅 Book Now at splitdyboat.com