Elephant Head Rock – Pinnacle in Thailand

Name: Elephant Head Rock
Address: Thailand

About Elephant Head Rock

Elephant Head Rock, locally known as Hin Pusa, is a renowned dive site in the Similan Islands, Thailand, located about 1 kilometer southwest of Similan Island No. 8. It's famous for its extraordinary topography, a "playground" of massive granite boulders that create a complex underwater maze of deep canyons, tunnels, and arches. These impressive rock formations extend from depths exceeding 40 meters all the way to the surface, where three large boulders break the water, one resembling an elephant's head and giving the site its name. The massive boulders are adorned with vibrant soft corals, colorful sea fans, and black corals, providing a rich habitat for a diverse range of marine life. Divers can expect to encounter various shark species, including Whitetip, Blacktip, and even Grey Reef Sharks in deeper sections, along with schools of Giant Trevally and Great Barracuda commonly seen hunting around the rocks. Smaller creatures like Ribbon Eels hide in sandy patches, while Green and Hawksbill Turtles can be spotted munching on corals. The site also boasts an abundance of reef fish and invertebrates, such as Moray Eels, various shrimps, Cuttlefish, and numerous species of snapper, sweetlips, and fusiliers. This site generally offers excellent visibility, often ranging from 15 to 40 meters. However, potential strong currents mean it is best suited for advanced divers. The currents can be quite challenging, especially around the full or new moon, often rebounding off the boulders to create unpredictable upcurrents, downcurrents, and whirlpools. Entry to the site is exclusively by boat, typically done off the back of the vessel due to its exposed nature. Following the dive guide's path is crucial to safely navigate the intricate boulder formations and currents.

Highlights

Massive granite boulder formationsThrilling swim-throughs and canyonsFrequent shark and pelagic sightingsDiverse coral and reef fishExcellent visibilityRibbon Eels and marine invertebrates

Season calendar

Best months to dive here

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Excellent

Good

Off-Season

Nov – Apr (Peak)

Best visibility 25–30m, calm Andaman Sea. Similan & Surin Islands open. Whale sharks and manta rays at Richelieu Rock.

May (Transition)

Similan season opening/closing. Variable conditions, occasional rain. Still good diving at coastal sites.

Jun – Oct (Monsoon)

SW Monsoon brings rough seas. Similan Islands CLOSED. Gulf coast (Koh Tao) still diveable Jun–Sep.

Dive site facts: Elephant Head Rock

Depth: 0–40+ m
Typical dive: 18–40 m, 45–60 min
Current: Moderate to very strong
Visibility: 10–40+ m
Water temperature: 27–30°C
Entry: Boat / negative entry
Level: Advanced recommended, current experience essential
Dive type: Reef, boulder, swim-through
Region / port: Similan Islands, Andaman Sea
Coordinates: 8.5789, 97.6234

Conditions & Currents

Elephant Head Rock is situated in the open ocean, which means currents can range from moderate to very strong and are often unpredictable. The current typically flows from southwest to northwest during high tide, but interactions with the large boulders can create complex patterns, including upcurrents, downcurrents, and even localized whirlpools. Divers should be prepared for potential drift and maintain excellent buoyancy control, especially when navigating the numerous swim-throughs and channels. Entry is typically a boat dive, often a negative entry, requiring divers to descend quickly to avoid surface currents. Due to these varying conditions, a close watch on your dive guide and conservative gas planning are essential for a safe and enjoyable exploration of this dynamic site.

Marine life & sighting chances

Frogfish

rare

Dive profile & how the dive runs

Divers typically begin a dive at Elephant Head Rock with a negative entry on the southern side, descending quickly to avoid surface currents. The initial descent reveals a dramatic landscape of granite boulders tumbling into the depths, well past 40 meters, interspersed with sandy patches. Following the boulders on the left shoulder, you'll encounter a channel around 26 meters deep and approximately 2 meters wide, adorned with soft corals. This passage often features a "window" for photographers. Beyond the channel, exploration continues through broad swim-throughs, starting around 26 meters, with multiple exits that open up towards the surface. A torch is recommended for peering into crevices and overhead environments. The dive plan usually involves circling the main boulder cluster, adapting the route based on current direction and strength. Safety stops are conducted in shallower, more sheltered areas, such as the northern side, if currents allow, before surfacing near the liveaboard or tender.

Underwater photography

Elephant Head Rock offers exceptional opportunities for wide-angle photography, capturing the dramatic scale of its granite boulder formations and expansive swim-throughs. A fisheye or wide-angle lens is ideal for showcasing the impressive underwater architecture and the schools of pelagic fish that frequent the site. For capturing details within the channels and crevices, a powerful torch is indispensable, both for illumination and for highlighting subjects like ribbon eels and juvenile reef fish. Due to the variable currents, maintaining excellent buoyancy control is crucial to avoid contact with delicate corals and to hold position for stable shots. When entering swim-throughs, practice mindful finning to preserve visibility for those following. For macro subjects, search sandy patches between boulders for smaller, shyer creatures, but be mindful of the overall current conditions and the flow of the group.

Combine with nearby dive sites

Getting there & logistics

Access to Elephant Head Rock and the Similan Islands is primarily via liveaboard trips departing from Khao Lak. While Phuket is an international gateway with Phuket International Airport (HKT), transfers to Khao Lak are necessary for liveaboard departures. Typical liveaboard durations range from 3 nights to 7 nights, often combining the Similans with other sites like Richelieu Rock and Koh Bon/Tachai. National Park fees are applicable for all divers visiting the Similan Islands. It's advisable to book well in advance, especially during peak season, to secure a spot on preferred liveaboards. Day trips to the Similans from Phuket or Khao Lak are also available but generally offer less dive time and may not visit all the premier sites.

Safety & environment

Diving at Elephant Head Rock requires careful attention to safety protocols due to potentially strong and unpredictable currents. All divers should ensure their travel insurance includes comprehensive dive coverage and emergency evacuation. The nearest recompression chamber is typically located in Phuket. Given the remote nature of the Similan Islands, evacuation can be time-consuming, emphasizing the importance of preventative measures. Always dive with a qualified and experienced guide who is familiar with the site's unique current patterns. Adhere strictly to the dive plan, maintain situational awareness, and avoid venturing off alone, especially in swim-throughs and areas with overhead environments. Strong buoyancy control is paramount to prevent accidental ascents or descents and to avoid contact with the reef.

Who it suits, and who it doesn't

Suited for

Advanced Open Water Divers
Divers comfortable with strong currents
Those who enjoy drift diving
Photographers seeking dramatic wide-angle shots
Divers interested in unique topography and swim-throughs

Less suited for

Open Water Divers without current experience
Divers with poor buoyancy control
Those prone to claustrophobia in confined spaces
Beginners or those uncomfortable with challenging conditions
Divers who prefer calm, current-free environments

FAQ

Elephant Head Rock FAQ

Why is it called Elephant Head Rock?

The dive site derives its name from a cluster of granite boulders that break the surface of the water. When viewed from a specific angle, these formations are said to resemble an elephant's head emerging from the sea, giving the site its distinctive moniker.

What is the typical depth range for diving at Elephant Head Rock?

Elephant Head Rock offers a varied depth profile, with dive depths ranging from the surface down to over 40 meters. Most of the primary dive activities and features, including swim-throughs, are found between 18 meters and 40 meters, catering to experienced divers.

Are currents generally strong at Elephant Head Rock?

Yes, currents at Elephant Head Rock can be moderate to very strong and are often unpredictable. The site's open-ocean location and the interaction of currents with the massive boulders can create complex flow patterns, requiring divers to be proficient in current management and buoyancy control.

What kind of marine life can I expect to see here?

Elephant Head Rock is known for both pelagic and reef species. You can frequently spot schools of giant trevallies and barracudas, while deeper areas may reveal white-tip, black-tip, and occasionally grey reef sharks. Ribbon eels and various reef fish inhabit the boulder formations and sandy patches.

Is this site suitable for beginner divers?

Due to its often strong currents, challenging topography with swim-throughs, and significant depths, Elephant Head Rock is generally not recommended for beginner or Open Water divers. It is best suited for Advanced Open Water divers with experience in drift diving and good buoyancy control.

Why dive Elephant Head Rock from a liveaboard?

Elephant Head Rock is one of Thailand's signature dive sites. A liveaboard sleeps you on the water and puts you in the water for three to four guided dives per day, including dawn and night dives that day-boat operators rarely offer. You skip the daily commute back to port and reach quieter, less-crowded sites in the same region on a single trip.

Below are the liveaboards that include Elephant Head Rock on their Thailand itineraries.

Route region: Liveaboards in the Similan & Surin Islands →

Thailand

20 guests29 m

Dive sites similar to Elephant Head Rock

Same character, same waters, six more sites divers love for the exact same reasons.Compare seasons, access and liveaboard routes, then pick the site that fits your trip best.

Anemone Reef

Thailand

Anemone Reef, locally known as "Hin Jom" or "submerged rock," is a significant limestone pinnacle entirely hidden beneath the Andaman Sea's surface.

Suitable for: Intermediate
Current: Ripping
Access: Liveaboard or dayboat
Depth: 5–26 m
Theme: Pinnacle / Wall

Ang Thong, Wao Island

Thailand

Wao Island, nestled within the picturesque Ang Thong National Marine Park, is a captivating dive site characterized by its dramatic limestone formations and intricate underwater landscape.

Suitable for: Beginner
Current: Strong
Access: Liveaboard or dayboat
Depth: 3–20 m
Theme: Cave & cavern / Reef

Beacon Reef

Thailand

Beacon Reef, sometimes referred to as Beacon Bay or Beacon Point, is a cherished dive site within Thailand's Similan Islands National Park.

Suitable for: Beginner
Current: Moderate
Access: Liveaboard or dayboat
Depth: 5–25 m
Theme: Reef / Wreck

Breakfast Bend

Thailand

Breakfast Bend, also known as Three Trees, is a highly regarded dive site located along the eastern side of Similan Island No. 9, Koh Bangu.

Suitable for: Beginner
Current: Strong
Access: Liveaboard or dayboat
Depth: 5–25 m
Theme: Reef

Christmas Point

Thailand

Christmas Point, located on Similan Island number 9 (Koh Ba-Ngu), stands out as one of the Similan Islands' most iconic dive sites.

Suitable for: Intermediate
Current: Strong
Access: Liveaboard or dayboat
Depth: 2–40 m
Theme: Pinnacle

Chumphon Pinnacle

Thailand

Chumphon Pinnacle is a renowned deep dive site situated approximately 12 kilometers northwest of Koh Tao in the Gulf of Thailand.

Suitable for: Intermediate
Current: Strong
Access: Liveaboard or dayboat
Depth: 12–36 m
Theme: Pinnacle

About Elephant Head Rock

Highlights

Season calendar

Nov – Apr (Peak)

May (Transition)

Jun – Oct (Monsoon)

Dive site facts: Elephant Head Rock

Conditions & Currents

Marine life & sighting chances

Dive profile & how the dive runs

Underwater photography

Combine with nearby dive sites

Getting there & logistics

Safety & environment

Who it suits, and who it doesn't

Suited for

Less suited for

Elephant Head Rock FAQ

Why dive Elephant Head Rock from a liveaboard?

Liveaboards diving Elephant Head Rock

Dive sites similar to Elephant Head Rock

12 liveaboards run the Elephant Head Rock route.