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AI that understands Thai seas — by Local Divemasters

Trending Trips This Week

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The most-viewed upcoming trips across all types

Scuba Day Trips

Phi Phi Islands

Apr 30, 2026

Sirolo Dive

M/V SIROLO — Sirolodive's luxury day-trip dive yacht in Phuket. 24 m × 8 m, 3 decks, capacity 67, Nitrox membrane, free WiFi. Daily departures from Chalong Pier to Phi Phi, Racha Yai, Racha Noi and Anemone Reef.

1 Day

Liveaboard

South Andaman 4 Days 5 Nights

May 6, 2026

Issara Liveaboard

MV Issara — high-end Thai steel-hulled liveaboard built 2016–17, 28.5 m × 6.5 m, 4 decks, max 22 guests in 11 hotel-style cabins. Indoor saloon, jacuzzi sun deck, full-board buffet dining.

6D5N

Scuba Day Trips

Racha Island

Apr 30, 2026

MV Mermaid

MV Mermaid (Aqua Mermaid) — a trusted Phuket dive boat with a strong steel hull and Twin Hino 620hp diesels. 60 divers + 5–6 crew, 7 days a week to Phi Phi, Racha Islands and the King Cruiser Wreck.

1 Day

Scuba Day Trips

Racha Island

Apr 30, 2026

Mandarin Queen 7

Brand-new 30.5 m M/V Mandarin Queen 7 — Phuket's largest day-trip dive boat with massive deck space, dedicated dive platform, lounges and shaded sun decks. Year-round trips to Racha Yai, Racha Noi, King Cruiser Wreck, Shark Point and Anemone Reef.

1 Day

Scuba Day Trips

Phi Phi Islands

Apr 30, 2026

Mandarin Queen 5

Brand-new Phuket dive boat — 26.2 m M/V Mandarin Queen 5 with spacious dive platform, lounge and upper sun deck. Daily day trips to King Cruiser Wreck, Shark Point, Anemone Reef, Racha Yai and Racha Noi.

1 Day

Scuba Day Trips

Racha Island

Apr 30, 2026

Hug Ocean Boat

Discover Phuket's Andaman Sea aboard Hug Ocean — a luxury 3-deck dive yacht for 80 guests with a thrilling water slide, sun-soaked top deck, and PADI-certified diving at Racha Yai and Racha Noi.

1 Day

Latest Articles

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Guides, tips, and stories from our divers

The Bombed Hold at 30 Metres Where 100 Motorbikes Wait

Two bombs split a British supply ship in 1941. Eighty-five years later, her cargo of motorcycles, trucks, and locomotives sits exactly where the crew left it.

Where Did Koh Tao's Whale Sharks Go After 1,409 Sightings?

Between 1991 and 2023, Koh Tao logged 1,409 whale shark sightings — nearly half of Thailand's total. Then the encounters dropped to near zero.

4 Breathing Mistakes That Empty Your Tank Before the Group

Beginners burn air at 20–30 L/min — double the rate of experienced divers. Four fixable habits close the gap, starting with a 12-second breath cycle.

Why Koh Rong Khon's 3-Knot Current Builds Better Reefs

Koh Rong Khon sits metres from the Hardeep wreck yet hosts one of Samae San's healthiest reefs. Strong tidal current, 25 m depth, and decades of Navy protection explain why.

Blacktip Sharks at 3 Metres: Koh Chan Samae San

Koh Chan hides blacktip reef sharks in knee-deep water, five clownfish species, and a whip coral forest at 16 metres — all inside a Navy-controlled marine park 45 minutes from Pattaya.

Hin Yai: The Gulf Pinnacle Where Sharks Patrol at 14 Metres

A submerged granite pinnacle off Samae San, Hin Yai rises from 32 metres to a coral-covered plateau at 14 m — drawing blacktip sharks, nudibranchs, and rare clownfish to one of the Gulf of Thailand's best offshore dives.

83,000 m² of Coral on a Navy-Locked Island: Koh Kham

Koh Kham packs 83,000 square metres of staghorn, table and brain coral into waters barely 3-15 metres deep — all under Royal Thai Navy guard in Sattahip's Samae San marine park.

Hin San Chalarm: Best Coral Pinnacle in Samae San

Hin San Chalarm -- Shark Fin Rock -- rises from the Gulf of Thailand near Samae San, harbouring 28-metre coral walls, resident sea turtles, and the clearest visibility in the Sattahip archipelago.

Koh Thalu: Swim-Through Caves in Chumphon's Pierced Island

A small limestone island in Mu Koh Chumphon National Park with a massive cavern punched clean through the rock — plus a heart-shaped cave, dense anemone colonies, and blacktip reef sharks on the deeper margins.

Where Mantas Queue at Koh Bon's 24-Metre Ridge

Koh Bon's submerged pinnacle hosts a manta cleaning station where reef wrasses service roughly 20 photo-identified rays each season -- here is how the site works and when to dive it.

Where Giant Trevally Hunt in Koh Tachai's Strongest Current

Koh Tachai Pinnacle sits in open blue between Similan and Surin, swept by currents that draw giant trevally, barracuda, and seasonal mantas to its granite dome.

Where Whale Sharks Surface Daily at Koh Ran Ped

Koh Ran Ped and Ran Kai in Chumphon draw whale sharks every spring to a plankton-rich channel just 18 metres deep — reachable by snorkelers on a 1,700 THB day trip.

The Coral Bommie at 12 Metres That Defines Similan Diving

A single coral bommie off Similan Island 7 hosts more species than some entire dive sites. East of Eden's gentle slope and hard coral gardens reward every certification level.

Hin Lak Ngam: Thailand's Black Coral Capital in Chumphon

Two rocky outcrops inside Mu Koh Chumphon National Park shelter Thailand's highest concentration of black coral — and virtually no other divers.

A Heart-Shaped Reef and a Royal Inscription at Koh Lang Ka Jiw

Koh Lang Ka Jiw hides a heart-shaped reef, a Rama V inscription, and hundreds of thousands of swiftlets inside Mu Koh Chumphon National Park.

Why Elephant Head's Granite Tunnels Demand a Second Dive

Elephant Head Rock hides a 40-metre granite labyrinth of swim-throughs between Similan Islands 7 and 8 — and one dive is never enough to see it all.

10 Reef Stations on a Rope: Koh Mattra's Underwater Trail

Thailand's first underwater nature study trail runs along Koh Mattra's eastern reef in Chumphon, with 10 signed stations from giant clams to sea fans at 1-8 metres depth.

The 5-Hour Trap: When Your Decongestant Quits Underwater

Pseudoephedrine clears your sinuses for descent — then its half-life expires at depth. The five risk factors behind reverse sinus squeeze.

The 4-Second Fix When Your BCD Won't Stop Filling

A stuck BCD inflator can launch you to the surface in seconds. Three faults cause it — salt, sand, and O-rings — and one disconnect ends it in four.

75 cm of Fury: What Triggers a Titan Triggerfish to Charge

Teeth built to crack urchins, an inverted-cone territory that reaches the surface, and a charge with zero warning — why Thailand's biggest triggerfish earns its fearsome reputation.

The Lake Where 5 Million Jellyfish Forgot How to Sting

Palau's Jellyfish Lake holds millions of golden jellyfish that evolved to be harmless. Here is what 12,000 years of isolation created and how to visit.

10,000 Coral Fragments on a PVC Rack — Why They Survived

Chanthaburi’s low-tech PVC nursery kept 95% of coral fragments alive after the Gulf’s worst bleaching. Species selection made the difference.

25 Metres, Zero Bar, 4 Seconds to Decide

Insufficient gas triggers 41% of dive fatalities. Four risk factors at depth decide which emergency ascent gives the best chance of surfacing safely.

That Hard Pull at 30 Metres Is Your First Stage Talking

When your regulator fights you at depth, intermediate pressure tells the story. A five-minute pre-dive IP check and annual service are all it takes.

The Slug That Steals Weapons: Koh Tao's Nudibranch Obsession

Koh Tao hosts 146 nudibranch species — slugs that steal stinging cells, sequester poison, and defy every rule about defenceless invertebrates. Here is what lives on the reef you keep swimming past.

5 Depths Where Hin Daeng's Red Wall Changes Completely

From snorkelling reef to 60-metre drop-off, each depth band on Hin Daeng's crimson wall delivers a different dive and different animals. Here is what to expect at every level.

Why Divers Fly to Iceland for a 35-Minute Freshwater Dive

Silfra Fissure offers 100-metre visibility in 2°C glacial water filtered through lava for a century — the only dive on Earth between two tectonic plates.

Why 45% of Gulf Corals Turned White — and What Divers See Now

Nearly half of Gulf of Thailand coral colonies bleached in 2024. SST data, island-by-island damage, DMCR recovery rates, and what divers find on the reef now.

5 Nitrox Mistakes That Turn Extra Bottom Time Into Real Risk

EAN32 extends your no-deco limits — but only if you avoid these five errors that trip up newly certified nitrox divers on Thai dive boats.

1,500 Newtons in 80 Microseconds: Thailand's Mantis Shrimp

A 10 cm crustacean delivers the ocean's fastest punch — and thrives in Andaman rubble zones most divers swim right past.

Phuket Scuba Day Trips

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Certified diving from Chalong Pier, year-round

Scuba Day Trips

Phuket

Sirolo Dive

Scuba Day Trips

Phuket

MV Mermaid

Scuba Day Trips

Phuket

Mandarin Queen 7

Scuba Day Trips

Phuket

Mandarin Queen 5

Scuba Day Trips

Phuket

Hug Ocean Boat

Discover Phuket's Andaman Sea aboard Hug Ocean — a luxury 3-deck dive yacht for 80 guests with a thrilling water slide, sun-soaked top deck, and PADI-certified diving at Racha Yai and Racha Noi.

Thailand Liveaboards

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Multi-day trips across the Andaman and Gulf

Liveaboard

Phuket

Vela Liveaboard

MV Vela / Vala — massive 43 m steel-hull liveaboard with only 20 guests max for ultimate space and privacy. King and twin AC en-suite cabins, large dive deck, indoor saloon and rooftop sun deck. Highest international safety standards.

Liveaboard

Phuket

Aquarian Liveaboard

MV Aquarian — striking 2021-built red steel liveaboard, 31.4 m × 7.5 m, max 28 guests in 14 cabins. Free unlimited Nitrox via Coltri Sub membranes, one of Thailand's largest dive platforms, and full premium-hotel comfort.

Liveaboard

Phuket

Issara Liveaboard

MV Issara — high-end Thai steel-hulled liveaboard built 2016–17, 28.5 m × 6.5 m, 4 decks, max 22 guests in 11 hotel-style cabins. Indoor saloon, jacuzzi sun deck, full-board buffet dining.

Featured Articles

ดูทั้งหมด

Hand-picked stories from across our dive community

Where Whale Sharks Surface Daily at Koh Ran Ped

Koh Ran Ped and Ran Kai in Chumphon draw whale sharks every spring to a plankton-rich channel just 18 metres deep — reachable by snorkelers on a 1,700 THB day trip.

The Coral Bommie at 12 Metres That Defines Similan Diving

A single coral bommie off Similan Island 7 hosts more species than some entire dive sites. East of Eden's gentle slope and hard coral gardens reward every certification level.

One Country, Every Type of Dive: Why Thailand Is the Most Underrated Bucket-List Destination

Whale sharks, manta rays, macro critters, wrecks, pinnacles, drift, coral gardens — Thailand delivers every style of diving within one country. Here's why that matters.

75 cm of Fury: What Triggers a Titan Triggerfish to Charge

Teeth built to crack urchins, an inverted-cone territory that reaches the surface, and a charge with zero warning — why Thailand's biggest triggerfish earns its fearsome reputation.

Hin Lak Ngam: Thailand's Black Coral Capital in Chumphon

Two rocky outcrops inside Mu Koh Chumphon National Park shelter Thailand's highest concentration of black coral — and virtually no other divers.

The 15-Minute Post-Dive Rinse That Doubles Your Gear's Life

Master the complete 15-minute post-dive rinse protocol for every piece of scuba equipment. From regulator dust caps to BCD bladder flushes, this step-by-step routine prevents corrosion and extends gear life.

Where Did Koh Tao's Whale Sharks Go After 1,409 Sightings?

Between 1991 and 2023, Koh Tao logged 1,409 whale shark sightings — nearly half of Thailand's total. Then the encounters dropped to near zero.

5 Nitrox Mistakes That Turn Extra Bottom Time Into Real Risk

EAN32 extends your no-deco limits — but only if you avoid these five errors that trip up newly certified nitrox divers on Thai dive boats.

The 5-Hour Trap: When Your Decongestant Quits Underwater

Pseudoephedrine clears your sinuses for descent — then its half-life expires at depth. The five risk factors behind reverse sinus squeeze.

March in Thailand: Why the Andaman Always Wins the Dive Trip

Thailand has two seas. In March, only one delivers peak visibility, whale shark odds, and liveaboard access. Here's why seasoned divers always pick the Andaman.

How to Time Richelieu Rock for Whale Sharks Before May 15

Richelieu Rock's purple horseshoe pinnacle hosts whale sharks from February to April — with the park closing May 15, here's what the final weeks offer.

48 Hours Post-Dive: The Ear Injury Nobody Expects

Middle ear barotrauma often shows up days after the dive. How to spot delayed ear squeeze, when to ground yourself, and where to find help in Thailand.

Your Wetsuit Stinks: The Complete Care Guide That Actually Works

From rinsing after every dive to patching neoprene tears, this no-nonsense guide covers everything you need to keep your wetsuit fresh, flexible, and lasting years longer.

Boonsung at 18 Metres: The Reef a Tsunami Built

A tin dredger sunk in 1984, split into five pieces by the 2004 tsunami, now hosts one of Khao Lak's densest reefs. Here is what grew back.

Hin Yai: The Gulf Pinnacle Where Sharks Patrol at 14 Metres

4 Breathing Mistakes That Empty Your Tank Before the Group

Beginners burn air at 20–30 L/min — double the rate of experienced divers. Four fixable habits close the gap, starting with a 12-second breath cycle.

Ghost Pipefish at 16 Metres: Koh Doc Mai's Macro Wall

Koh Doc Mai's vertical limestone drops straight to 30 metres — and every crack hides a nudibranch, seahorse, or ghost pipefish. A macro photographer's field guide to Phuket's only wall dive.

Where Giant Trevally Hunt in Koh Tachai's Strongest Current

Koh Tachai Pinnacle sits in open blue between Similan and Surin, swept by currents that draw giant trevally, barracuda, and seasonal mantas to its granite dome.

5 Depths Where Hin Daeng's Red Wall Changes Completely

From snorkelling reef to 60-metre drop-off, each depth band on Hin Daeng's crimson wall delivers a different dive and different animals. Here is what to expect at every level.

Never Dived Before? Here's Why Thailand Should Be Your First Ever Dive Trip

Warm 29°C water, 30m visibility, the world's cheapest PADI courses, and reefs built for beginners. Here's why Thailand is the single best place on Earth to start diving.