A decommissioned Royal Thai Navy landing craft ship intentionally sunk in 2012 off Koh Chang, now the largest artificial reef in the Gulf of Thailand.

Depth30m

Leveladvanced

Entryboat

Currentmoderate

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pinnacle

Hin Bai (Sail Rock)

Koh Phangan · Gulf of Thailand · Thailand

A massive granite pinnacle rising from the Gulf of Thailand between Koh Phangan and Koh Tao, famous for its vertical chimney swim-through and seasonal whale shark encounters on the region's most exciting dive.

Hin Lak Bat

Chumphon · Gulf of Thailand · Thailand

Remote granite pinnacle off the Chumphon coast, offering whale shark encounters and untouched coral gardens far from the tourist diving circuit.

Koh Rang Marine Park

Koh Chang · Gulf of Thailand · Thailand

Pristine uninhabited island in Mu Koh Chang National Marine Park with some of eastern Thailand's healthiest coral reefs and crystal-clear shallow waters.

Sail Rock

Koh Phangan · Gulf of Thailand · Thailand

Granite pinnacle rising from 40 m to above the surface. Vertical chimney swim-through and whale shark hotspot.

Sattahip Naval Base Reef

Sattahip · Gulf of Thailand · Thailand

Military-restricted waters near the Royal Thai Navy base harbor some of the upper Gulf's healthiest reefs, accessible only through authorized dive operators.

White Rock

Koh Tao · Gulf of Thailand · Thailand

Koh Tao's most popular dive site. Two rock formations with sandy channel between. Night dive favorite.

Dive centers in Gulf of Thailand

Freedive School

Apnea Total

Koh Tao · Gulf of Thailand · Thailand

World headquarters of the Apnea Total freediving system on Koh Tao since 2004. Proprietary certification from beginner to instructor level.

Apnea Total Koh Tao

Koh Tao · Gulf of Thailand · Thailand

AIDA and Molchanovs freediving school at Chalok Bay, Koh Tao. Courses from beginner to instructor level in calm, sheltered waters.

Asia Divers

Koh Tao · Gulf of Thailand · Thailand

PADI center on Sairee Beach with Korean-speaking instructors. Daily boat trips, underwater photography specialty, nitrox available.

Assava Dive Resort

Koh Tao · Gulf of Thailand · Thailand

PADI CDC, Eco Center, and Green Fins resort at Chalok Bay. Pool, house reef, upscale accommodation, conservation-focused diving on Koh Tao's quiet south coast.

Black Turtle Dive

Koh Tao · Gulf of Thailand · Thailand

Eco-focused PADI CDC in Mae Haad with all-inclusive pricing. Conservation specialties, reef cleanups, accommodation and equipment included in courses.

Buddha View Dive Resort

Koh Tao · Gulf of Thailand · Thailand

SSI dive resort at Chalok Bay, Koh Tao. On-site pool, house reef, accommodation from budget to bungalows, daily boat trips to premier sites.

Coral Grand Divers

Koh Tao · Gulf of Thailand · Thailand

PADI 5-Star IDC center on Sairee Beach since 1998. On-site resort, two pools, technical diving, instructor training courses.

DPM Diving

Koh Tao · Gulf of Thailand · Thailand

International dive chain in Mae Haad offering SSI, PADI, and RAID courses. On-site hostel with bar, freediving programs, social backpacker atmosphere.

Davy Jones Locker

Koh Tao · Gulf of Thailand · Thailand

PADI 5-Star center at Mae Haad pier, Koh Tao. On-site pool and accommodation, courses from beginner to Divemaster, daily trips to all major sites.

Goodtime Adventures

Koh Tao · Gulf of Thailand · Thailand

PADI dive center and social hostel in Mae Haad, Koh Tao. Budget-friendly diving, freediving courses, pool, vibrant backpacker atmosphere.

Isla Tortuga Divers

Koh Tao · Gulf of Thailand · Thailand

PADI 5-Star IDC in Mae Haad specializing in Spanish-language instructor training. Full IDC conducted in Spanish, recreational courses in English and Spanish.

Koh Tao Divers

Koh Tao · Gulf of Thailand · Thailand

PADI 5-Star center in Mae Haad since 2001. French and Italian-speaking instructors, nitrox, daily two-tank boat trips to all sites.

Master Divers

Koh Tao · Gulf of Thailand · Thailand

PADI CDC in Mae Haad with a strict maximum of 4 students per instructor. Full professional training pathway, premium equipment, daily trips to all sites.

Master Divers Koh Tao

Koh Tao · Gulf of Thailand · Thailand

SSI dive center on Sairee Beach specializing in quality instruction and technical diving. Small groups, premium equipment, daily trips.

Phoenix Divers

Koh Tao · Gulf of Thailand · Thailand

SSI and PADI center on Sairee Beach since 1992. Purpose-built training pool, iconic pink dive boats, multilingual instruction in five languages.

Sairee Cottage Diving

Koh Tao · Gulf of Thailand · Thailand

PADI 5-Star IDC Resort on Sairee Beach since 1995. Beachfront bungalows, house reef, full course range to instructor level.

Scuba Junction Diving

Koh Tao · Gulf of Thailand · Thailand

PADI dive center on Sairee Beach, Koh Tao. Small groups, full course range from beginner to Divemaster, daily boat trips to top sites.

Scuba Shack

Koh Tao · Gulf of Thailand · Thailand

PADI 5-Star IDC on North Sairee Beach. Exclusively Scubapro equipment, instruction in 10+ languages, full course range to instructor level.

Diving in Gulf of Thailand

Gulf of Thailand offers reef, wreck, pinnacle dive sites across 5 locations. Browse dive locations by depth, type and conditions before planning your dive.

FAQ

What certification is needed for Chumphon Pinnacle?

Advanced Open Water certification is recommended. The pinnacles drop to 36+ meters, and currents can be strong. The site is best suited for experienced divers. Open Water divers can enjoy shallower sections with a guide.

When is the best time to dive Chumphon Pinnacle?

March to October during the Gulf of Thailand's calm season. Whale sharks are most commonly seen from March to May. Bull sharks appear periodically throughout the season. Visibility ranges from 5 to 25 meters.

What makes Chumphon Pinnacle special?

Chumphon Pinnacle is a group of granite pinnacles northwest of Koh Tao, hosting the island's best big-animal encounters. Whale sharks and bull sharks are the main draws, along with enormous schools of batfish and barracuda that swirl around the pinnacles.

What certification do I need to dive the HTMS Chang?

Advanced Open Water certification is the minimum requirement since the deck sits at around 18 meters and the seabed is at 30 meters. For wreck penetration, a Wreck Diver specialty or equivalent experience is strongly recommended. The interior spaces are well-prepared for diver access but proper training and equipment are essential.

What was the HTMS Chang before it became a dive site?

The HTMS Chang (LCT-713) was a US-built LST-class landing craft that served in the Royal Thai Navy for decades. After decommissioning, the Thai Navy cleaned and prepared the 100-meter vessel for sinking as an artificial reef. It was sunk on November 22, 2012, specifically to create a world-class dive attraction for Koh Chang.

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