Explore Sihanoukville

Nestled along Cambodia’s southern coast, Sihanoukville offers an enchanting diving experience that is both accessible and exhilarating. This vibrant beach town serves as a gateway to the idyllic islands scattered across the Andaman Sea, where the waters are calm and visibility is exceptional. Divers are drawn to this region for its wealth of marine biodiversity and a variety of dive sites that cater to all skill levels. From rocky walls and dramatic drop-offs to breathtaking coral reefs and intriguing shipwrecks, the underwater landscapes are as diverse as they are stunning.

During the peak diving season, from November to April, the sea comes alive with a dazzling array of marine life. Expect encounters with colorful coral gardens teeming with tropical fish, and the thrill of spotting larger species like barracuda, marlin, and even the majestic whale shark. For those seeking a more remote adventure, liveaboard trips to less-visited islands reveal pristine reefs and unique sights like seahorse breeding grounds. Whether you're a novice or a seasoned diver, Sihanoukville's underwater realm promises an unforgettable journey into the heart of the ocean.

Places to Explore

Koh Rong

13 Divesites 1 Center

One of Cambodia’s best dive sites, Koh Rong and neighboring Koh Rong Samloem are a hit with divers.

Upcoming Events

Instructor Evaluation

Bubbles Up! Dive Center

Instructor Evaluation - IE

11 Dec 2025

The Instructor Evaluation (IE) is the final step of SSI’s 2-Step Instructor Training Approach Divemasters or equivalent-level professionals will have to successfully complete the Instructor Training Course (ITC) first where you’ll learn how to:

• Conduct academic sessions
• Lead confined water training
• Teach Open Water Diver and various Specialty programs like Enriched Air Nitrox, Diver Stress&Rescue, Perfect Buoyancy and more
• Develop student management and communication skills

Already an experienced instructor with another agency? You may be eligible for shortened oboarding options where you will only have to complete certain parts of the Instructor Training Course (ITC) followed by passing an Instructor Evaluation (IE). Contact an SSI Training Center near you to learn more.
Already certified as an Assistant Instructor with another agency? You could continue your professional journey with SSI. Get in touch with a local SSI Training Center to explore your options.

Top Dive Sites Map

Mares, Janez Kranjc

★★★★☆ Crabby

The dive site is about 50 min boat ride from M’pai Bay. Near the beach is a sandy area with rocks, while when diving more to the corner there are lot of rocks covered with corals. A lot of fish and macro life. There can me a slight current, maximum depth is 12m.

6
Logs
6
Divers
8.0 m
⌀ Depth
8.0 m
⌀ Visibility
Scubapro, Stephen Frink

★★★★☆ Lazy Beach Point

The dive site is 45 minutes by boat and starts shallow. It gradually goes deeper with a colorful reef and lots of coral reef fish. There is no current and suitable for all divers

214
Logs
128
Divers
10.0 m
⌀ Depth
5.0 m
⌀ Visibility
Mares, Predrag Vuckovic

★★★★☆ Barracuda point

The dive site is 50 minute boat ride from M’pai Bay and is close to a beach. The site starts shallow with a rocky and sandy bottom and gradually goes deeper to a coral reef with an abundance of fish and reef life,

48
Logs
39
Divers
12.0 m
⌀ Depth
6.0 m
⌀ Visibility
Mares, Predrag Vuckovic

★★★★☆ Coral Garden

This dive site is recently (re)discovered and we found a wide range of hard corals, soft corals, sponges and whip corals. With a maximum depth of 15 meters and easy access from boat it is suitable for all divers.

259
Logs
202
Divers
12.0 m
⌀ Depth
9.0 m
⌀ Visibility
Mares, Predrag Vuckovic

★★★★☆ Cobia Cave

Along the fringing coral reef there is a overhang at 13,5 meter deep. The rock formations are nice and in the cracks of the rocks there are some critters hiding from predators. There is a small upside down fishing boat that sank a while ago.

365
Logs
256
Divers
14.0 m
⌀ Depth
8.0 m
⌀ Visibility
Mares, Janez Kranjc

★★★★☆ Back Door

Backdoor is a dive site at the north site of M’pai Bay, it is less than 10 minute boat ride to the mooring buoy. It easy using the descent line. The maximum depth is 14 m with no or slight current.

391
Logs
325
Divers
13.0 m
⌀ Depth
7.0 m
⌀ Visibility
Aqualung

★★★★☆ M’Pai Bay house reef

Easy access from the beach and with a maximum depth of 5 meters it is perfect for try dives, beginners and courses. It is protected with easy conditions.

271
Logs
166
Divers
7.0 m
⌀ Depth
7.0 m
⌀ Visibility
Aqualung

★★★★☆ Vietnamese Bay

Within 10 minute drive of M’pai bay there is a sheltered reef. This dive site is a mix of muck and reef diving. In the sand live interesting creatures which are harder to find and the coral patches are covered with soft and hard corals and contain a variety of reef fish.

43
Logs
38
Divers
11.0 m
⌀ Depth
4.0 m
⌀ Visibility
Aqualung

★★★★☆ Corner bar

The dive site is located at Koh Koun, a small uninhabited island in front of M’pai Bay. It takes less than 10 minutes to get to the mooring buoy. There is a descent line with makes it very easy to go down.

1,174
Logs
769
Divers
13.0 m
⌀ Depth
7.0 m
⌀ Visibility
Mares, Predrag Vuckovic

★★★★☆ Middle Tree

This dive site is between Corner Bar and Last Tree and is a beautiful reef with large rocks covered in soft and hard corals. There is an abundance of macro and fish life.

113
Logs
97
Divers
12.0 m
⌀ Depth
8.0 m
⌀ Visibility
Mares

★★★★☆ Last Tree

The dive site is 10 minutes by boat and easy to dive. Sometimes there is a light to mediate current that takes the divers around the corner. There are big rocks covered in soft and hard corals.

138
Logs
115
Divers
12.0 m
⌀ Depth
7.0 m
⌀ Visibility
Mares

★★★★☆ Corral

This small bay is perfect for muck and night diving. There is shallow reef close to the island that goes deeper on the outside. It is the only muck dive site in the area.

544
Logs
397
Divers
10.0 m
⌀ Depth
6.0 m
⌀ Visibility
Aqualung

★★★★☆ Secret Reef

This reef is not easy to find but it is our deepest dive site. There is current and maximum depth is 28 meter so only suitable for divers with an advanced/deep dive certificate.

437
Logs
369
Divers
22.0 m
⌀ Depth
19.0 m
⌀ Visibility

Diving in Sihanoukville

Sihanoukville, a coastal gem in Cambodia, boasts some incredible dive sites. One of the must-visit spots is the Koh Rong Samloem's wreck dive, where divers can explore an artificial reef teeming with diverse marine life. This site offers an intriguing glimpse into the underwater world and is perfect for those interested in historical undersea adventures.

For shore diving enthusiasts, the beaches of Sihanoukville provide easy access to vibrant coral gardens and abundant fish species. Night dives reveal stunning bioluminescent displays and nocturnal marine behaviors, offering a unique underwater spectacle. While shore diving is readily available, liveaboard options enable divers to reach more remote sites, ensuring a balanced diving experience that caters to various preferences.

The best Months to dive in Sihanoukville

Sihanoukville offers year-round diving opportunities with warm tropical waters. Water temperatures typically range from 28°C to 30°C/82°F to 86°F throughout the year, providing comfortable conditions for divers. Visibility generally varies from 5 to 15 meters/16 to 49 feet, with the best clarity often found during the dry season.

The dry season, from November to April, brings calmer seas and better visibility, ideal for diving. Conversely, the wet season, spanning May to October, introduces stronger winds and currents, which can reduce visibility and increase surface chop. Despite these changes, diving remains possible year-round, though the wet season is considered less favorable due to rougher conditions.

Statistics

Historical data and trends

Dive Activity & Environmental Conditions

Centers Map

Bubbles Up! Dive Center

Community Road, M’Pai Bay Koh Rong Sanloem, 18000 Sihanoukville, KHM