If you’re planning a scuba diving adventure in the Gulf of Thailand, the Southwest Pinnacle dive site near Koh Tao is an essential location for aquatic enthusiasts. Known for its dramatic granite rock formations and diverse marine life, this offshore location is one of the most popular dive sites for both recreational divers and those pursuing advanced training.
Southwest Pinnacle Dive Site Overview
Located approximately 7 km southwest of Koh Tao, the South West Pinnacle dive site (also called Southwest Pinnacle or South West Pinnacles) features a series of submerged granite pinnacles that rise from the sandy seabed at about 30 meters up to around 5 meters below the surface. These towering granite rock formations create an exciting environment for exploration. The surrounding underwater landscapes are teeming with coral reefs, colorful reef dwellers, and schools of pelagic fish, making it a favorite among underwater photography enthusiasts.
Unlike shallow reefs, this site offers a real adventure—think swim-throughs, strong currents, and the occasional whale shark. About 60% of advanced divers visiting Koh Tao include this site in their itinerary.
Marine Life Highlights
South West Pinnacle is renowned for spectacular Wildlife Encounters. Divers often spot large schools of Chevron Barracuda, yellowtail barracuda, Pickhandle Barracuda, and even the elusive Great Barracuda. You’ll also see reef fish such as scribbled filefish, Pink Anemone fish, masked porcupine fish, and Copperband Butterflyfish.
Macro life includes Boxing Shrimp, Dancing Shrimp, and Bearded Scorpionfish hiding in cracks and crevices. Giant Moray Eel and Titan Triggerfish are also common residents. During the right season—typically March to June—you might even catch a glimpse of a whale shark cruising past.
Trevally, Jenkins whip rays, Longfin Bannerfish, Blue-Ringed Angelfish, and Eight-Banded Butterflyfish are regularly seen, adding to the incredible biodiversity. And if you’re really lucky, a Reef Shark might make an appearance near the deeper edges of the pinnacle.
Underwater Features of Southwest Pinnacle dive site
This dive site is not just about the marine life—it’s a geological spectacle. Massive granite pinnacles are covered with soft corals, Black coral, Gorgonian Sea Fans, Sea Whips, Red Harp coral, and vibrant Barrel Sponges. Fields of Sea Anemones, especially the pink skunk clownfish, create a colorful carpet along the reef.
One of the highlights is the “secret pinnacle,” a deeper, slightly more secluded rock formation further from the main structure—an ideal challenge for experienced divers and underwater photographers alike.
Currents and Dive Difficulty
The strong currents here are what make the dive both thrilling and rewarding. These currents sweep nutrients through the site, attracting large marine life and creating an underwater highway. Nearly 1 in 3 dives here includes an unexpected sighting—be it a rare fish, manta ray, or a turtle passing through.
Due to the depth, current, and complexity of the site (including tunnels and overhangs), the South West Pinnacle dive site is best suited for Advanced Open Water divers or those training to become one. Beginner courses should be completed at shallower dive sites before attempting this one.
Diving Experience Levels and Courses
Many dive schools and dive centers around Koh Tao include South West Pinnacle in their training routes. It’s commonly used for deep dive training, Nitrox specialty courses, and safety stop practice. Whether you’re an Open Water Diver looking to level up or already certified as an Advanced Open Water diver, this site offers an unmatched experience.
If you’re using SSI for your Dive Course, you can log your dives and collect your digital certification cards via the MySSI app.
Getting There and Dive Planning
Dive trips to Southwest Pinnacle dive site depart daily from dive shops around Koh Tao—especially from Mae Haad, Chalok Bay. We visit Southwest Pinnacle depending on conditions and the experience level of the divers on the boat. Boats typically leave early in the day to catch the best conditions. Because of its offshore location, dive plans usually include time for proper safety stops and surface intervals.
Be sure to check with your diving instructors or local dive shops for current conditions, and remember to plan for extra time to explore other nearby sites.
Explore More in Koh Tao
Enhance your Koh Tao diving experience by combining this site with other must-see dive locations such as Shark Island, Hin Taa Toh, and Laem Thian Caves. Whether you’re working toward your next certification or simply pursuing your dive goals, Koh Tao offers ideal conditions for every level of diver.
If you’re staying on the island, Woodlawn Villas Koh Tao provides peaceful, central accommodation ideal for divers.
Conclusion
Southwest Pinnacle dive site is Koh Tao’s ultimate deep dive. From massive granite pinnacles and colorful coral reefs to powerful currents and rare pelagic sightings, this is the dive site that seasoned scuba divers dream about. Whether you’re weaving through swim-throughs, navigating currents, or capturing marine life through your lens, every dive here is a story worth telling.
So grab your gear, double-check your dive computer, and get ready to experience one of the best dive sites in the Gulf of Thailand.
