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Thailand Diving: Similan Islands Liveaboard, April 2006

Thailand’s Similan Islands remain a spectacular – and cheap – place to scuba dive, with liveaboards offering the chance of close encounters with manta rays and a host of other amazing underwater creatures

Just back from two back to back 4 day liveaboards in the Similan Islands. These were my fourth and fifth liveaboard trips in the Similans, and I’m happy to report that the diving there is as spectacular as ever. I’ve dived quite a few other places in Asia and elsewhere, but I have to say that the Similans offer the best consistent dive experience I’ve had. I think it’s the combination of a four day liveaboard with a variety of great sites with good visibility – reefs, big boulders, and ocean pinnacles – a plethora of amazing underwater creatures, from seahorses to manta rays, and, of course, reasonable prices. A liveaboard with my friends at Phuket-Diving-Safaris.com will cost 17800 Thai Baht, which is less than $500 US – it’s difficult to think of anywhere else you could enjoy such great diving for such a low price without cutting corners.

One of the reasons why diving the Similans is such a great experience is because there’s a natural sense of build up over the four days of the liveaboard . You start off in the Similan Islands proper, doing some easy reef dives that offer spectacular bommies like East Of Eden, which is so covered in fan and soft corals and alive with different fish species that it’s been regularly filmed and photographed by the likes of National Geographic. By the second day, you get to dive the more challenging big boulder sites like Elephant Head Rock and North Point, where truly huge rocks several storeys high have rolled together to create a labyrinth of swimthoughs and shelter for the fish. There’s something exhilarating about being at 20 metres passing over the top of one of these rocks – and then watch it drop away another 30 metres below you as you fly off the side. Turtles chewing on coral hide around them, and within the canyons formed by the rocks you can find clown triggerfish, probably my favourite fish of all.

By the afternoon of the second day the liveaboard heads north from the Similan Islands and arrived at Koh Bon, “The Island Of Hope”, and where most divers hope they’ll get to see Koh Bon’s resident manta rays. It’s not guaranteed but if you get lucky, you’ll be finning along Koh Bon’s sheer wall and suddenly see a manta coming towards you out of the blue. As you can imagine, for many divers on the boat, the expectation of seeing mantas is the highlight of the trip, and if it actually happens, the sense of collective euphoria after the dive is palpable.

On the third day the boat reaches Richelieu Rock, possibly the finest dive site in all of Thailand, an ocean pinnacle ina horseshoe shape that has a plethora of creatures living around it. When my dive buddy Clive and I dropped in first thing at the morning – just before 7 am and before any other divers – we were lucky enough to see a manta ray circling the rock’s apex. We simply hovered there at 10 metres, watching the manta swing round us and pass over our heads, unbothered by our presence. It’s hard to articulate just how mesmerising these creatures are to watch – they move with an unearthly grace that is incredibly difficult to tear your eyes away from.

There’s two more dives on the way home on the fourth day, the final dive being at Koh Bon again if you’re lucky – given you are in the open ocean, it’s up to the boat captain which sites you go to as he has to ensure it’s safe.

During my two trips, we enjoyed the Similans’ usual excellent visibility – a minimum of 15 metres viz on each dive, usually more. The journey out for the second liveaboard was uncharacteristically rough due to a cyclone crossing over Thailand and Burma – usually conditions are pretty calm, although if take seasickness tablets if you’re susceptible.

Sadly the cyclone meant that it was too rough for us to go to Richelieu Rock on the second liveaboard, but to be honest, I don’t think anyone was particularly bothered as the dive at Koh Bon had been truly amazing. There were five manta rays present and we were the only dive boat there. I was guiding my two friends Rachel and Paul and was furthest along the wall when a manta simply appeared out of the blue, coming in and circling right around us – it couldn’t have got any closer. It was joined by a second one, so as the first left us the second came if for a look as well. I heard every other guide frantically banging their tank to signal the arrival of the mantas – a little later we went and sat in the blue at 10 metres or so and watch the mantas wheel around us below – two of them seemed to be courting or simply playing around. When I got back on the boat, I was followed by a German girl with the biggest grin on her face who looked at me and simply said: “Unbelievable!”

Far from satiating my desire to dive the Similans, doing these two liveaboards made me want to definitely go back again next year. After the relief of discovering that most of the sites were undamaged by the tsunami – see my original article about diving the Similan Islands six weeks after the tsunami – it’s great to return to the Similans and find that everything is the same, only better. These sites are so rich in their marine diversity and topography that they repay repeated diving.

The dive season for the Similans is drawing to a close at the moment due to the monsoon season, which makes the seas too rough for safe diving. The dive season begins again in mid-October 2006 and runs through to May 2007. So you’ve got plenty of time to plan out a visit to the Similans, which to my mind still live up to their reputation as one of the best dive destinations in the world.



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Start Planning Your Thailand Dive Trip Now!

:: Check the availability and pricing of liveaboards in Thailand and book online.


:: Find the cheapest flights to Thailand - Phuket (airport code: HKT) is the nearest airport for diving the Similan Islands. You can get direct international flights to Phuket or go via one of Bangkok's two airports - Suvarnabhumi (BKK), the main airport, or Don Mueang (DMK), the low cost carrier terminal.


:: Make sure you don't forget to bring any of the essentials for your scuba diving trip with our comprehensive Liveaboard Packing List


:: World Nomads offers simple and flexible travel insurance. Buy at home or while traveling and claim online from anywhere in the world.


:: Find available places to stay in Phuket for before and after your liveaboard on Booking.com - usually you can reserve a room with no upfront payment. Pay when you check out. Free cancellations too.


:: Need inspiration? See our Best Places To Dive In Thailand for ideas of where to go and what to do.


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Similan Liveaboard Reports 2024

  • Diving The Similan Islands 2025: A Quick Guide
  • Similan Islands Liveaboard 21-25 November 2024 Trip Report
  • Similan Islands Liveaboard 6 – 10 May 2024 Trip Report
  • Similan Islands Liveaboard 21 – 25 February 2024
  • Similan Islands Liveaboard 15-19 February 2024

Similan Liveaboard Reports 2023

  • Similan Islands Liveaboard Trip Report December 2023
  • Similan Liveaboard Trip Report October 2023
  • Similan Islands Liveaboard April 2023 Trip Report
  • Similan Islands Liveaboard Trip Report February 2023

Similan Liveaboard Reports 2022

  • Similan Islands Liveaboard Trip Report December 2022
  • Similan Islands Liveaboard February 2020
  • Myanmar And Similan Islands Liveaboard Trip Report March 2015

Similan Islands DIve Sites

  • Similan Islands Dive Sites Overview
  • West Of Eden
  • Shark’s Fin Reef
  • Boulder City
  • Three Trees
  • Christmas Point
  • North Point
  • Hideaway Bay and Tuna Wreck
  • Koh Bon
  • Koh Bon Pinnacle
  • Ao Suthep, Surin Islands
  • Richelieu Rock

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  • Where To See Manta Rays In Thailand
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  • Are There Great White Sharks In Thailand?
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  • Koh Tao: An Introduction
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My Recent Dive Trips

  • November 2024: Similan Islands liveaboard, Thailand
  • October 2024: Forgotten Islands and Banda Sea liveaboard, Indonesia
  • August 2024: Komodo and Saleh Bay liveaboard, Indonesia
  • May 2024: Similan Islands liveaboard, Thailand
  • April 2024: Sogod Bay, Philippines
  • February 2024: Similan Islands liveaboard, Thailand
  • January 2024:Gangga Island Resort, Indonesia
  • December 2023: Similan Islands liveaboard, Thailand
  • Mejangan Island, Bali
  • October 2023: Similan Islands liveaboard, Thailand
  • June 2023: Raja Ampat liveaboard, Indonesia
  • April 2023: Maldives liveaboard
  • April 2023: Similan Islands liveaboard, Thailand
  • February 2023: Similan Islands liveaboard, Thailand
  • December 2022: Raja Ampat liveaboard, Indonesia
  • December 2022: Similan Islands liveaboard, Thailand
  • August 2022: Komodo liveaboard, Indonesia
  • June 2022: USAT Liberty shipwreck, Bali, Indonesia
  • April 2022: Stonehenge, Koh Lipe, Thailand
  • March 2022: Manta Rays at Koh Bon, Thailand
  • January 2022: Richelieu Rock liveaboard, Thailand
  • March 2021: HTMS Chang and Alahambra Rock liveaboard, Thailand
  • February 2020: Similan Islands liveaboard, Thailand
  • December 2019: Raja Ampat liveaboard, Indonesia
  • October 2019: Malapascua, Philippines
  • June 2019: Sogod Bay, Philippines
  • April 2019: Tulamben, Bali
  • December 2018: Sogod Bay, Philippines
  • December 2018: Anilao, Philippines
  • October 2018: Moalboal, Philippines
  • October 2018: Malapascua, Philippines
  • July 2018: Tulamben, Bali
  • May 2018: Raja Ampat, Indonesia
  • April 2018: Sogod Bay, Philippines

My Less Recent Dive Trips

  • May 2017: Apo Island and Dumaguete, Philippines
  • April 2017: Tubbataha Reef, Philippines
  • April 2017: Sogod Bay, Philippines
  • March 2017: Triton Bay, Indonesia
  • March 2017: Raja Ampat, Indonesia
  • September 2016: Tulamben, Bali at Alba Dive Resort
  • August 2016: Cenderawasih Bay on Damai 1
  • April 2016: Sogod Bay at Sogod Bay Scuba Resort
  • February 2016: Raja Ampat and Banda Islands on Damai 1
  • April 2015: Anilao at Crystal Dive Resort
  • March 2015: Myanmar and Similan Islands on Thailand Aggressor
  • May 2013: Similan Islands on Thailand Aggressor
  • April 2013: Tubbataha Reef on Discovery Palawan
  • January 2013: Komodo, Indonesia on MSY Damai
  • August 2012: Cenderawasih Bay, Indonesia
  • April 2012: Similan Islands and Southern Thailand liveaboard
  • January 2012: Similan Islands liveaboard, Thailand
  • August 2011: Hanifaru, Maldives
  • June 2011: Tubbataha Liveaboard Hans Christian Andersen
  • April 2011: Similan Islands and Southern Thailand liveaboard
  • April 2011: Carpe Vita Liveaboard, Maldives
  • March 2011: Lembeh Strait, Indonesia
  • December 2010: Menjangan, Bali
  • July 2010: Tofo, Mozambique
  • July 2010: Sardine Run, South Africa
  • May 2010: Sangalaki / Derawan, Tambora
  • March 2010: MV Flying Seahorse, Similan Islands
  • March 2010: MV Orion, Southern Maldives
  • January 2010: Big Blue Explorer, Palau
  • November 2009: MSY Damai, Banda Sea Liveaboard, Indonesia
  • October 2009: MSY Damai, Komodo Liveaboard, Indonesia
  • October 2009: MV Orion, Maldives Liveaboard
  • September 2009: MV Scubanet, Koh Losin, Thailand
  • May 2009: MSY Seahorse, Banda Sea liveaboard, Indonesia
  • March 2009: Sachika Liveaboard, Maldives
  • February 2009: Daytrips, Koh Lanta, Thailand
  • January 2009: MV Jazz, Burma (Myanmar) Liveaboard

Back In The Day Bragging Rights Dive Trips

  • November 2008: Borneo Explorer, Visayas Liveaboard
  • September 2008: S/Y Siren, Komodo Liveaboard
  • August 2008: Ocean Rover, Sulawesi Liveaboard
  • August 2008: NAD Lembeh Resort, Indonesia
  • June 2008: Koh Tao
  • March 2008: Maldives, Bandos Island
  • February 2008: MSY Seahorse, Raja Ampat Liveaboard
  • January 2008: MV Jazz, Burma Liveaboard
  • October 2007: Bali Dive Safari
  • September 2007: Davao, Philippines
  • July 2007: Great White Sharks, Rodney Fox Liveaboard
  • June 2007: Big Blue, Palau Liveaboard
  • May 2007: Whale Sharks at Exmouth, Australia
  • April 2007: Borneo Explorer, Tubbataha Reef Liveaboard
  • December 2006: Komodo Dancer, Komodo Liveaboard

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