Dive Site: Chumphon Pinnacle

About Chumphon Pinnacle

Chumphon Pinnacle is a renowned deep dive site situated approximately 12 kilometers northwest of Koh Tao in the Gulf of Thailand. This massive granite pinnacle, surrounded by smaller clusters, ascends from depths of 30-40 meters to within 14-16 meters of the surface, creating an impressive underwater mountain. Its isolated open-ocean position acts as a magnet for marine life, drawing in rich nutrients that support a vibrant ecosystem, making it a prime location for encounters with large pelagic species and frequent whale shark sightings. The site is characterized by its main pinnacle, stretching around 40 meters long, and features include 'Barracuda Rock,' a large swim-through at the base of the central mooring line, and a significant fissure towards its southern end. The top of the pinnacle is extensively covered with anemones, home to numerous pink anemonefish, while deeper crevices and ledges host a variety of macro life. The site's dynamic environment, influenced by currents, ensures a constant flow of life and keeps divers engaged. Divers can anticipate superior visibility, often ranging from 15 to 30 meters, though plankton blooms can occasionally reduce it while simultaneously increasing the chances of whale shark encounters. Water temperatures remain consistently warm, between 28-30°C, making for comfortable diving conditions year-round. However, the site's depth and potential for strong currents necessitate advanced diving skills. A typical dive involves descending along the buoy line, exploring the main pinnacle and its surrounding structures, often encountering massive schools of barracuda, trevally, and snapper. The dive plan usually includes exploring different depth levels, searching for both large pelagics and intricate macro life, before a slow ascent and safety stop entertained by reef squid and fusiliers.

Dive site facts: Chumphon Pinnacle

Depth

14–36 m

Typical dive

14–22 m, 45-60 min

Current

Moderate to strong

Visibility

15–30 m

Water temperature

28–30°C

Entry

Live drop from boat

Level

Advanced Open Water Diver

Dive type

Pinnacle, pelagic, macro

Region / port

Koh Tao, Gulf of Thailand

Coordinates

10.1234, 99.7567

Conditions & Currents

Chumphon Pinnacle typically experiences moderate to strong currents, which are a key factor in attracting the abundant marine life to the site. Divers should be prepared for variable current strength, which can shift throughout the day and seasonally, making good buoyancy control and experience with currents essential. Entry is usually via a live drop from the boat, and dive plans are carefully briefed by the divemaster to account for current direction and strength, often involving a drift around the pinnacle. While conditions are generally manageable for experienced divers, strong currents can occasionally lead to challenging surface conditions and surge, particularly during certain monsoon periods. Visibility can range widely from 10 to 40 meters, though an average of 20-25 meters is common, with plankton blooms sometimes reducing visibility but increasing chances of whale shark sighti

Marine life & sighting chances

Whale shark

March to October · common

Chevron Barracuda

common

Giant Barracuda

common

Batfish

common

Giant Grouper

common

Trevally

common

Pink Anemonefish

common

Green Sea Turtle

occasional

Banded Boxing Shrimp

common

Banded Pipefish

occasional

Jann's Pipefish

occasional

Snapper

common

Fusilier

common

Reef Squid

occasional

Dive profile & how the dive runs

Divers typically begin by descending along the main buoy line, often positioned over the southern part of the pinnacle near Barracuda Rock. The initial descent takes you to around 30 meters, where schools of fusiliers and rainbow runners are abundant. From there, you might explore the base for schools of one-spot snapper and yellowtail barracuda, and search for razorfish near the ocean floor. The dive then progresses by slowly ascending along the rock wall of Barracuda Rock, exploring crevices for macro life such as ghost shrimp and banded boxing shrimp. A common route involves following the contours of the main granite pinnacle, navigating through or around large schools of pickhandle barracuda and other pelagics. As the dive continues and depth decreases, focus shifts to observing banded and Jann’s pipefish in deeper cracks and the vibrant anemone gardens at shallower depths. The safety stop is usually conducted on the buoy line, often accompanied by fusiliers and reef squid, before surfacing.

Underwater photography

Chumphon Pinnacle offers incredible opportunities for both wide-angle and macro photography due to its diverse marine life. For wide-angle shots, a fisheye or wide-angle lens is ideal to capture the grandeur of the granite pinnacle, vast schools of barracuda and trevally, and the dramatic backdrop of whale shark encounters. Good strobes are essential to bring out the vibrant colors of the anemone beds and schooling fish in the deeper sections. For macro enthusiasts, a dedicated macro lens will be invaluable for capturing the intricate details of banded boxing shrimp, pipefish, and nudibranchs hidden in the crevices and on the anemone-covered rocks. Due to potential currents, maintaining excellent buoyancy is crucial for sharp images and to avoid stirring up sediment. Patience is key, especially when waiting for shy macro subjects or positioning for the perfect shot of passing pelagics.

Combine with nearby dive sites

• Koh Tao — Japanese Garden

  A sheltered, shallow site perfect for beginners and snorkelers, contrasting with Chumphon's deep pelagic environment.

• Koh Tao — Twins

  A popular site with three granite pinnacles, offering varied topography and rich reef life, suitable for all diver levels.

• Koh Tao — Green Rock

  Known for its unique rock formations, swim-throughs, and abundant marine life, providing a different experience than Chumphon's open-ocean feel.

• HTMS Sattakut Wreck

  An artificial reef and wreck dive, offering a historical and structural diving experience distinct from natural pinnacles.

Getting there & logistics

To dive Chumphon Pinnacle, you will typically travel from Koh Tao, which is the nearest and most convenient departure point. Koh Tao is accessible by ferry from Surat Thani or Chumphon on the mainland, or from the larger islands of Koh Samui and Koh Phangan. The nearest major airports are Koh Samui (USM) for direct flights or Surat Thani (URT) and Chumphon (CJM) for budget flights followed by a bus and ferry transfer. Dive trips to Chumphon Pinnacle usually involve a 40-45 minute boat journey from Koh Tao. Many dive operators schedule specific days for Chumphon dives, often as a two-tank trip, and sometimes offer Nitrox for extended bottom time due to its depth. No specific park fees are usually required for this site, as it is part of standard dive excursions from Koh Tao.

Safety & environment

Diving at Chumphon Pinnacle requires a high level of diver competence, with Advanced Open Water Diver certification strongly recommended due to the depth and potential for strong currents. All divers should carry valid dive insurance, as emergency evacuation from this offshore site can be complex and expensive. The nearest recompression chamber is located in Koh Samui. It is crucial to strictly adhere to dive plans provided by experienced divemasters, paying close attention to current conditions and maintaining good buoyancy control. Group separation can occur in strong currents, so effective buddy communication and a surface marker buoy (SMB) are essential. Divers should be mindful of boat traffic, especially during surface intervals, and maintain adequate air consumption given the site's depth profile.

Who it suits — and who it doesn't

FAQ

Chumphon Pinnacle FAQ

Liveaboards diving Chumphon Pinnacle

These liveaboards may visit Chumphon Pinnacle on selected itineraries — the exact dive sites depend on departure, weather and conditions.

Mandarin Queen 9

Thailand

26 guests37.5 m

Manta Queen 8

Thailand

24 guests

$127/day

The Junk

Thailand

18 guests33 m

$163/day

Deep Andaman Queen

Thailand

23 guests30.5 m

$194/day

Explorer

Thailand

16 guests25 m

$150/day

Andaman

Thailand

20 guests26 m

$108/day

Stingray

Thailand

8 guests24 m

$245/day

Seatopia

Thailand

24 guests24 m