We Wish You Were Here
Big Blue Diving Khao Lak
Similan Liveaboard Experts
Similan Diving Day Trips
Tomorrow's Dive Sites
19 November 2025
Richelieu Rock
Thursday Dive Sites
20 November 2025
Surin Islands & Richelieu
Big Blue Diving Khao Lak
Big Blue Diving has been offering diving in Thailand for over 20 years and in Khao Lak since 2003. Khao Lak is the perfect departure point for the Similan and Surin Islands. The clear waters of the Andaman Sea typically provide great visibility and a huge diversity of marine life.
Our Similan liveaboard and Similan day trips offer diving at both the Andaman Seas national parks including the amazing Koh Bon, Koh Tachai and Richelieu Rock commonly regarded as Thailand’s best dive site.
Our Similan Liveaboard
MV Blue Dolphin
A Similan Liveaboard allows you to do the most amount of diving in the shortest possible time, without ever feeling rushed. The MV Blue Dolphin offers 14 dives on our Similan 4 day cruise. Staff are professional and experienced. We are also a CCR and side-mount friendly boat with set up space and guides available for either style of diving.
Enjoy the spacious relaxation areas around the boat plus delicious Thai and international cuisine at an unbeatable price.
- SPECIAL DISCOUNTS
- PRICE MATCH GUARANTEE
- PERFECT DIVE GROUPS
- EXCELLENT SUPPORT
Our Similan Liveaboard
Dive with Us on The Blue Dolphin
Our Similan liveaboard trips are 4 days and 4 nights. The perfect length of time to see all the best dive sites that the Similan Islands and world famous Richelieu Rock have to offer.
4 days / 4 nights from 27,800 THB
With Big Blue’s legendary service there’s no better way to see the Similan Islands and Richelieu Rock
Up-Coming Similan Liveaboard Departures
Similan Liveaboard Features
Our Day Trip Speedboat
Dive with Us on the Wave Rider
Our daily schedule allows you to dive the best the West Coast has to offer, plus we dive at the world famous Richelieu Rock four days a week. This is the fastest way to see the best of the Similan and Surin National Parks
Day Trip Diving
To The Similan Islands and Richelieu Rock
Big Blue Diving Khao Lak now has more day trip diving options than ever!!
Tomorrow's Dive Sites
19 November 2025
Richelieu Rock
Thursday Dive Sites
20 November 2025
Surin Islands & Richelieu
Turtle Conservation Trips
We’ve partnered with Andaman Turtle Watch to offer an unique 4-night conservation-focused diving experience in the Similan Islands. These educational expeditions combines our renowned diving standards with hands-on turtle research opportunities.
Perfect for divers seeking an educational adventure that makes a difference.
Check-out Our 2026 - 2027 Turtle Trips
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Similans – Surin – Richelieu Rock
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Need anything for your dive trip?
Big Blue Shop
Why not order now and we will have it waiting for you on your arrival on-board the MV Blue Dolphin.
The Big Blue Dive Equipment Shop
Coming to dive with us? Need anything for your trip?
Why not order now and we will have it waiting for you when you arrive in Khao Lak
Our store has some of the worlds best brands available at great prices.
When booking a trip with us, you will qualify for some even better deals too.
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Sharkskin Titanium Chill Proof Long Pants Female
8,178฿ Select options This product has multiple variants. The options may be chosen on the product page -
Scubapro Nylon SMB
Price range: 3,305฿ through 3,535฿ Select options This product has multiple variants. The options may be chosen on the product page -
Deep Blue Safety Balloon
350฿ Add to basket -
Scubapro Solo Mask
2,645฿ Add to basket
Live and Let Dive
Big Blue Diving Khao Lak
Live From Our Liveaboard
Get a real feel for what life is like aboard the MV Blue Dolphin with our Similan liveaboard trip reports. Written by our crew immediately after each expedition returns, these honest accounts capture the diving conditions, marine life encounters, and onboard atmosphere from every trip to the Similan and Surin Islands.
From epic whale shark sightings at Richelieu Rock to hunting tunas at Koh Bon Pinnacle, perfect drift dives at Three Trees to challenging currents at Christmas Point – our reports share the genuine experience of four days living and diving in Thailand’s premier national parks. Discover what makes each Similan diving season unique, learn about the diverse marine life we encounter, and see why our guests consistently rate their liveaboard experience as the highlight of their Thailand holiday.
Whether you’re planning your first liveaboard or you’re a returning guest wondering about current conditions, our trip reports give you an authentic glimpse into what awaits aboard the Blue Dolphin.
