Gulf of Thailand
Dive Site Explorer
The most comprehensive interactive map of every dive site in the Gulf of Thailand. From world-famous pinnacles to hidden reefs and historic wrecks.
Interactive Map
Click any pin for details. Scroll to zoom.
Sail Rock
AdvancedThe Crown Jewel of the Gulf
Chumphon Pinnacle
AdvancedDeep Pinnacles, Big Fish
Koh Yippon Lek / Hin Yippon
BeginnerAng Thong's Best Reef
HTMS Chang
AdvancedThailand's Biggest Wreck
Marine Life Calendar
When to see what across the Gulf. Current month highlighted.
The Crown Jewel of the Gulf
A massive granite pinnacle rising from 40m to break the surface, famous for whale shark encounters and its iconic vertical chimney swim-through.
Deep Pinnacles, Big Fish
A cluster of deep granite pinnacles draped in pink anemones, known for whale shark and bull shark sightings.
Anemone City
A stunning chain of submerged pinnacles carpeted in colorful anemones, with regular sightings of bull sharks and large pelagics.
The Secret Pinnacle
A lesser-known deep pinnacle near Chumphon Pinnacle that rewards adventurous divers with pristine marine life and zero crowds.
The Classic Night Dive
Koh Tao's most popular all-rounder — a large rocky reef with incredible macro life and frequent turtle encounters.
Cave Explorer's Playground
A labyrinth of swim-throughs, caves, and overhangs formed by massive granite boulders — the most adventurous reef dive on Koh Tao.
Compact Pinnacle, Big Surprises
A small but lively pinnacle with surprising macro life and schooling fish, often overlooked in favor of flashier neighbors.
The Perfect First Dive
A sheltered coral garden with resident turtles, seahorses, and schools of colorful reef fish — the ideal site for beginners and underwater photography.
Twin Pinnacles of Nang Yuan
Two rounded pinnacles near Koh Nang Yuan offering easy diving with colorful hard corals and swirling schools of fusiliers.
Current-Swept Action
A dramatic rocky island with strong currents that attract blacktip reef sharks, large barracuda, and pelagic visitors.
Koh Tao's Flagship Wreck
A 48-meter decommissioned Thai Navy LCI warship sunk in 2011, now a thriving artificial reef and one of the Gulf's best wreck dives.
The Newest Wreck in Town
A 44.9m Thai Navy fast attack craft sunk in 2023, still in pristine condition and rapidly colonizing with marine life.
Twin Sister of the Suphairin
The second of two Thai Navy vessels sunk off Koh Tao in 2023, sitting shallower than its sister ship and accessible to a wider range of divers.
Deep Wreck for Tech Divers
A small cargo vessel resting at 36m near Shark Island — a deep dive reward for experienced divers and tech diving students.
Easy Wreck for Beginners
A small catamaran hull at 18m — a non-intimidating wreck perfect for beginners getting their first taste of wreck diving.
Deep Pinnacle off Hin Wong
A deep offshore pinnacle with big fish action, accessible from the eastern coast of Koh Tao.
Freediving Paradise
A stunning shore-accessible bay on Koh Tao's quiet east coast, famous for resident turtles and calm freediving conditions.
Shallow Coral Haven
A quiet north-coast bay with healthy coral gardens and abundant juvenile fish, ideal for discovery dives and snorkeling.
Hidden Bay Gem
A picture-perfect bay with a sandy beach, rocky outcrops, and a coral reef teeming with colorful tropical fish.
Cliff Jumping Meets Freediving
A dramatic east-coast bay with rocky cliffs, a resident blacktip shark population, and a famous cliff-jumping rock.
Navigate by the Light
A quiet northeast bay beneath the old lighthouse, offering relaxed diving with macro critters and healthy coral.
Caves of the East Coast
A rocky headland with underwater caves and caverns, popular with adventurous divers seeking overhead environments.
Walk-In Sunset Reef
Koh Tao's most accessible dive — wade in from Sairee Beach for a shallow reef rich in macro life.
Ancient Pottery Underwater
Shallow pinnacles with scattered ancient pottery shards, named for the historic ceramics found among the coral.
Baby Sharks at Sunset
A shallow sandy bay where juvenile blacktip reef sharks and turtles can be spotted from the surface — perfect for snorkeling.
Red Sand Reef
A beautiful south-coast bay named for its red-tinged sand, with healthy coral and reliable turtle sightings.
Underwater Obstacle Course
A purpose-built underwater obstacle course with hoops, frames, and platforms for buoyancy training.
Trash to Treasure
An artificial reef created from cleaned metal structures, now a thriving ecosystem with excellent macro life.
Deep Rock Adventure
A deep rocky pinnacle south of Koh Tao with serious big fish action and minimal diver traffic.
The Unnamed One
A rarely visited deep pinnacle that never got a proper name — but delivers serious fish action for those who find it.
Nang Yuan's Deep Side
A submerged pinnacle west of the iconic triple island, offering more depth and bigger fish than the nearby Japanese Gardens.
The Secret West Coast Bay
A lesser-known rocky bay on Koh Tao's west coast with interesting boulder formations and relaxed marine life.
Beautiful Rock Reef
A beautiful rocky reef on Koh Tao's east coast with large granite formations and good macro diving.
Quiet Southern Bay
A quiet bay on the south coast used for training dives, with sandy patches and coral bommies.
Snorkeling Serenity
A quiet east-coast bay with a shallow reef perfect for snorkeling and skin diving practice.
Phangan's Island Reef
A small island connected to Koh Phangan by a sandbar at low tide, with excellent snorkeling and diverse reef life dropping to 24m.
Shore Diving Koh Phangan
An easily accessible reef at Mae Haad beach with coral gardens right from the shore.
Long Beach Coral Garden
A reef running along Haad Yao's beautiful long beach, perfect for casual snorkeling sessions.
Salad Beach Snorkeling
A pleasant reef off the quiet Haad Salad beach with coral patches and abundant reef fish.
Fishing Village Bay
A wide bay fronting a fishing village, good for mellow snorkeling and night diving for squid.
Phangan's Deep Rock
A rocky pinnacle off Koh Phangan's west coast offering the island's best deeper diving with schooling fish.
Rocky Cape Reef
A rocky cape on Koh Phangan's southwest coast with boulder formations and good reef fish diversity.
East Coast Explorer
A rocky point on Koh Phangan's east coast with good reef structure and less-visited underwater terrain.
Phangan's Coral Bay
A small north-coast bay with shallow coral gardens ideal for snorkeling and skin diving.
Royal Waterfall Beach Reef
A small reef near the famous royal waterfall beach, combining above-water hiking with below-water exploration.
Secluded Beach Snorkeling
A famously secluded beach accessible only by boat or jungle hike, with a small reef for casual snorkeling.
Samui's Snorkeling Island
A charming uninhabited island just 15 minutes south of Koh Samui with coral reefs, turtles, and zero crowds.
Pigs & Snorkeling
A tiny island famous for its friendly beach pigs, with shallow snorkeling in the channel toward Koh Tan.
Samui's Reef Secret
A rocky reef off Koh Samui's coast offering the closest proper diving without taking a boat to the islands.
Ang Thong's Best Reef
The signature dive site of Ang Thong Marine Park, with excellent coral coverage and the park's most diverse marine life.
Big Japanese Island
The larger sister island to Koh Yippon Lek, with a similar reef system and dramatic limestone scenery above water.
Clear Water Paradise
An island in the Ang Thong group with excellent visibility and a shallow reef popular with snorkeling tours.
Three Pillars Island
An island known for its natural stone arch and shallow snorkeling waters in the Ang Thong archipelago.
Rocky Island Snorkeling
A small rocky island in the Ang Thong group with shallow reef patches and calm snorkeling.
Ang Thong Outpost
A quiet island in the southern part of Ang Thong with a simple reef and peaceful snorkeling.
Park Headquarters Island
The main island of Ang Thong Marine Park with the park headquarters, a famous viewpoint, and basic snorkeling off the beach.
Ang Thong's Largest Island
The largest island in the Ang Thong group with a small fishing community and fringing reef for snorkeling.
Chumphon's Crown Jewel
The premier snorkeling and diving destination off Chumphon, with stunning visibility and healthy reefs largely untouched by mass tourism.
Little Sister Island
The smaller companion island to Koh Ngam Yai, with equally impressive reefs and even fewer visitors.
WWII Warship in the Gulf
A WWII-era Thai Navy vessel sunk as an artificial reef near Koh Ngam Yai — one of the most historically significant wrecks in the Gulf.
Chumphon's Deep Pinnacle
A submerged pinnacle near the Koh Ngam islands with deep walls and impressive pelagic fish encounters.
Hidden Island Reef
A small island in the Chumphon group with a healthy fringing reef and very few divers.
Three Points Deep
A deep offshore pinnacle system named for the three rocky points, offering challenging diving with big fish rewards.
Tunnel Island
An island with a natural tunnel through the rock and surrounding reefs for easy diving and snorkeling.
Chumphon's Beach Island
A small island near the Chumphon coast with a sandy beach and simple snorkeling.
Lanka's Little Isle
A small island near the Chumphon coast with a fringing reef and calm snorkeling waters.
Skull Island
Named for its skull-like rock formation, this island offers decent reef diving and a dramatic topside appearance.
Chumphon Coast Retreat
A coastal island near Chumphon with basic snorkeling and a pleasant beach.
Chumphon's Outer Island
An outer island in the Chumphon archipelago with untouched reefs and almost no diver traffic.
Off the Radar
A small island in the Chumphon group with healthy reef and minimal tourist impact.
Egg Island Snorkeling
A small, egg-shaped island near Chumphon with calm waters and basic snorkeling.
Duck & Chicken Islands
A pair of small islands named "Duck" and "Chicken" with reef systems that attract schooling fish.
Pattaya's Island Escape
The largest island off Pattaya with multiple dive sites around its coastline, from shallow coral to deeper walls.
Horseshoe Island
A horseshoe-shaped island with a sheltered bay and reef slopes dropping to 30m on the outer walls.
Tiny Island Charm
A tiny island near Koh Larn with a simple reef and calm snorkeling conditions.
The Big Navy Wreck
A 56-meter decommissioned US Navy LSM sunk in 2003, one of the Pattaya area's signature wreck dives with excellent marine colonization.
Sister Ship Down
A 56m former US Navy LSM sunk in 2006, the sister wreck to HTMS Khram with equally impressive marine life.
Shallow Wreck Explorer
A shallower wreck dive near Pattaya, accessible to intermediate divers and offering good macro life on the hull.
Pattaya's Best Reef
Often rated as Pattaya's best natural reef site, with healthy corals and regular turtle sightings.
Bamboo Island Reef
A beautiful island in the Pattaya outer islands with good reef diving and the nearby HTMS Khram wreck.
The Vertical Wall
A dramatic vertical wall dive off the outer islands, offering Pattaya's most exciting underwater terrain.
WWII Combat Wreck
A genuine WWII combat wreck — a cargo ship bombed and sunk by Japanese aircraft in 1942, now one of the Gulf's most historically significant dives.
Military Island Reefs
Military-controlled islands with restricted access that has preserved excellent reef systems.
Pattaya's Deep Pinnacle
A deep submerged pinnacle in outer Pattaya waters, visited by experienced divers seeking pelagic encounters.
Military Island Diving
A military-controlled island cluster with some of the best visibility in the upper Gulf and pristine reef systems.
Shark Fin Pinnacle
A fin-shaped rock breaking the surface with a reef dropping to 20m, named for its resemblance to a shark fin.
The Abyss
A legendary 85–100m deep sinkhole in the Gulf of Thailand — one of Southeast Asia's most extreme technical diving sites.
The New Twins
Two torpedo boats sunk in September 2024, the newest wreck dive sites in the Gulf of Thailand.
Thailand's Biggest Wreck
A massive 100-meter Thai Navy landing ship sunk in 2012 — the biggest diveable wreck in the Gulf of Thailand.
Koh Chang's Pinnacle
A rocky pinnacle near the HTMS Chang wreck with good coral coverage and schooling fish.
Flat Rock Reef
A flat rocky reef with easy diving conditions and a variety of reef fish and macro critters.
Blueberry Hill
Named for the blue-spotted stingrays that frequent this reef, a reliable site for ray encounters and macro diving.
Banana Shaped Rock
A banana-shaped rocky reef with easy diving conditions and healthy coral gardens.
Three Stone Pillars
Three rocky pillars rising from the seabed creating swim-throughs and interesting terrain.
Koh Chang's Best Dive
The premier dive site in the Koh Chang archipelago — a deep pinnacle in Koh Rang Marine Park with big fish and spectacular soft corals.
Easy Island Reefs
Two small islands with shallow reefs suitable for snorkeling and beginner dives.
West Side Reef
The western reef of Koh Thain island with rocky formations and reliable marine life.
Three Finger Formation
A reef formation with three finger-like ridges extending from a central point, creating an unusual diving terrain.
Quiet Island Reef
A small island with a basic reef offering quiet diving away from the more popular sites.
Paradise Island Snorkeling
A tiny paradise island with crystal-clear water and a shallow reef perfect for snorkeling and beach time.
Marine Park Jewel
The main island of Koh Rang Marine Park with protected reefs, turtles, and the best visibility in the Koh Chang area.
Outer Reef Explorer
An outer island near Koh Rang with decent reef diving and peaceful conditions.
Underwater Sculpture Park
Koh Kood's most popular dive/snorkel site featuring an underwater sculpture park and healthy reef.
Coral Garden & Boulders
A beautiful coral garden with large boulders and abundant fish life off Koh Kood.
Caves, Swim-throughs & Nudibranchs
A rock pinnacle with caves, swim-throughs, and one of the best nudibranch diversities near Koh Kood.
Koh Kood Rock Reef
A rock reef near Koh Kood with decent coral coverage and typical Gulf fish life.
Resort Island Reef
A charming resort island with an SSI dive center, healthy house reef, and seasonal turtle nesting. Visibility can be poor but reef health is impressive.
Small Island West of Koh Talu
A small island west of Koh Talu with staghorn coral fields.
Wall Drift Dive
An island featuring an awesome wall drift dive with beds of leafy soft corals in pink and purple.
Highest Coral Diversity in the Gulf
An extremely remote archipelago 54km offshore with 67 species of hard coral — the highest diversity in the entire Gulf of Thailand. Liveaboard access only.
Thailand's Most Remote Dive Site
A tiny mid-ocean pinnacle 80 nautical miles offshore — Thailand's smallest island and furthest from coast. Frequent whale sharks and mantas. One of the healthiest reef ecosystems in the Gulf.
Pink Dolphin Watching
Home to approximately 50 Indo-Pacific humpback dolphins (pink dolphins). Best seen before 8am at Laem Prathab and Ao Kwang Phao.
Closest Diving to Bangkok
The closest diveable location to Bangkok, featuring purple anemone fields at 5m and decent macro life.
Coral Restoration Project
A DMCR coral gardening project with cinderblock nurseries supporting approximately 48,000 restored coral colonies.
Central Gulf Deep Pinnacles
Twin underwater pinnacles in the central Gulf with big wall reef, anemone gardens, and occasional whale shark sightings.
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Explore These Sites With Us
We run freediving trips to the best sites near Koh Samui — Sail Rock, Chumphon Pinnacle, Ang Thong, and more. Maximum 3 students per trip.
This is the most comprehensive dive site directory for the Gulf of Thailand, covering 115 sites across 13 regions. Data compiled from 50+ sources including PADI, SSI, local dive operators, Thai Wreck Diver GPS database, and DMCR.