Dive Site: Koh Lipe — 8 Mile Rock

About Koh Lipe — 8 Mile Rock

8 Mile Rock, located approximately 13 kilometers offshore from Koh Lipe in the Tarutao National Marine Park, stands as one of Thailand's most exciting and advanced dive sites. This deep-water pinnacle, recognized for its vibrant and healthy reef, offers clear waters and a thriving marine ecosystem. Its remote location ensures fewer crowds, providing a more pristine and thrilling dive experience. The topography of 8 Mile Rock is characterized by an impressive underwater pinnacle structure. Divers can expect to descend onto a rich reef, exploring depths where schools of giant trevally, barracuda, and large groupers are commonly sighted. The site is also famous for frequent encounters with pelagic species, including whale sharks and mobula rays, particularly during certain seasons. Moray eels, reef sharks, triggerfish, and various colorful reef fish like clownfish and angelfish also call this pinnacle home. Due to its offshore position, 8 Mile Rock often experiences stronger currents and deeper waters, making it best suited for advanced certified divers. While open to all certified divers, an Advanced Open Water certification is recommended. The crossing to the site takes about 45-60 minutes by fast boat. Diving here typically involves two guided dives, with depths ranging from 18 to 30 meters, and dive durations of 45-55 minutes. This site is accessible year-round, even outside the main marine park, though whale shark sightings are more common between May and December, with peaks from October to December and in May.

Dive site facts: Koh Lipe — 8 Mile Rock

Depth

16–50 m

Typical dive

18–30 m, 45–55 min

Current

Strong and variable

Visibility

20–30 m (Nov–Apr)

Water temperature

27–30 °C

Entry

Speedboat / negative entry

Level

Advanced Open Water Diver minimum, experience recommended

Dive type

Pinnacle, pelagic, drift

Night dive

Not typical

Region / port

Satun Province, Thailand

Coordinates

6.3234, 99.3567

Conditions & Currents

8 Mile Rock is known for its strong and often variable currents, which are a defining characteristic of this exposed offshore pinnacle. These powerful upwelling currents concentrate nutrients, attracting the abundant pelagic life that defines the site. Divers should be prepared for drift diving conditions and must possess excellent buoyancy control and current management skills. Entry is typically a negative descent to quickly reach the sheltered parts of the pinnacle, and advanced certification is a strict minimum requirement, with many operators requiring proof of significant experience. Slack tide offers a brief respite, but generally, currents dictate the dive profile and necessitate careful planning for gas consumption and turnaround times. Surface conditions can also be choppy due to its open-ocean location, making for potentially challenging entries and exits.

Marine life & sighting chances

Whale shark

November-February, April-June · occasional

Manta ray

Dry season · occasional

Devil ray

occasional

Eagle ray

occasional

Leopard shark

occasional

Reef shark

occasional

Giant trevally

common

Barracuda

common

Snapper

common

Giant grouper

occasional

Tuna

occasional

Nudibranch

occasional

Scorpion fish

occasional

Lion fish

occasional

Dive profile & how the dive runs

Diving at 8 Mile Rock typically begins with an early morning speedboat departure from Koh Lipe, followed by a 45-60 minute journey to the site. Upon arrival, divers conduct a negative entry to quickly descend to the pinnacle, whose summit starts at 16 meters. The dive usually involves exploring the walls and ledges of the submerged mountain, progressively moving from deeper sections (often 25-30 meters, sometimes up to 45 meters for very experienced divers) towards shallower depths. Divers will navigate around the pinnacle, allowing the current to assist in covering ground while observing schooling pelagics. A typical dive lasts 45-55 minutes, with a focus on gas management given the depths and potential currents. The safety stop is usually conducted at 5 meters, often in the clear, blue open water near the pinnacle, before surfacing for a surface interval and a second dive to explore different sections or return for further observation.

Underwater photography

8 Mile Rock offers exceptional wide-angle photography opportunities due to its dramatic topography and abundant pelagic life. A fisheye or wide-angle lens is ideal for capturing the vast schools of trevally, barracuda, and snappers, as well as potential whale shark and manta ray encounters in the clear blue water. While natural light can be stunning in the upper reaches, strobes are recommended to bring out the vibrant colors of the soft corals and highlight subjects against the deep blue. Given the potential for strong currents and deeper dives, excellent buoyancy control is crucial to maintain position for shots and avoid disturbing the fragile environment. Patience is key for capturing elusive pelagics, and focusing on the interplay of light, current, and schooling fish yields impressive results.

Combine with nearby dive sites

• Stonehenge

  A signature reef dive with abundant soft corals, suitable for Open Water divers, located closer to Koh Lipe.

• Koh Talang

  Offers diverse sites for all levels, including macro-rich shallow bays and sloping walls for drift diving.

• Koh Taru

  Known for hard and soft corals, with potential sightings of coral cat sharks and large schools of yellow snapper.

• Koh Yang

  Protected from strong currents, ideal for relaxing drift dives and sightings of hawksbill turtles.

Getting there & logistics

Access to Koh Lipe, the base for diving 8 Mile Rock, is typically via Hat Yai International Airport (HDY) on the Thai mainland, followed by a 4–5 hour minivan and ferry transfer. Alternatively, direct ferries operate from Langkawi, Malaysia, during the high season. Dive operators on Koh Lipe run daily trips to 8 Mile Rock, which is about a 30-minute speedboat ride south. A typical day trip involves two guided dives, with breakfast and lunch served on board. A Tarutao National Marine Park fee of 200 Baht per person is usually required and is valid for five days, often included or facilitated by dive centers. Trips to 8 Mile Rock are best scheduled in the early morning to take advantage of calmer sea conditions before winds pick up.

Safety & environment

Diving 8 Mile Rock requires careful attention to safety due to its deep, exposed location and strong, unpredictable currents. An Advanced Open Water certification is a minimum requirement, and many dive operators insist on verifiable deep diving experience. Divers should carry appropriate safety equipment, such as a surface marker buoy (SMB) and potentially a personal marine rescue GPS for remote offshore sites. The nearest recompression chamber is likely located on Phuket or mainland Thailand, meaning evacuation could be protracted. Comprehensive dive insurance covering hyperbaric treatment and emergency evacuation is therefore essential. Divers must strictly adhere to their guide's instructions, monitor bottom time and gas consumption diligently, and maintain excellent buoyancy control to avoid rapid ascents or uncontrolled drifts.

Who it suits — and who it doesn't

FAQ

Koh Lipe — 8 Mile Rock FAQ

Liveaboards diving Koh Lipe — 8 Mile Rock

These liveaboards may visit Koh Lipe — 8 Mile Rock on selected itineraries — the exact dive sites depend on departure, weather and conditions.

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Andaman

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Stingray

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Seatopia

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