Dive site review

Deep Six

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(2 votes, 4.00/5)
Explore diving in Similan Islands
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4/5
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WOW! Once in a lifetime experience!
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Strong current
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Am I dreaming?! 30m+!
Level Advanced Divers
Dive depth Normal diving depth, 10-25m

Deep six dive site is one of the most famous of the Similans. Here you can see very beautiful hard coral, soft coral gardens, sponges and huge granite boulders. You can also find many pelagic fishes like Giant trevallies, dogtooth tunas and rainbow runners. They are attracted by the large school of fusiliers often there. Go a bit deeper and you may find whitetip reef sharks, Leopard Sharks and blue spotted stingrays. Unfortunately lots of coral, including table coral and sea fans, has been damaged by the 2004 Tsunami but the reef is slowly recovering. It is located on the north tip of the Similan Island number 6.

Deep Six is classified as a Deep dive. Deep Six is sometimes classified as a Drift dive. This location is a Reef.

Best time to dive: the ideal period to plan holidays here is October to November. Access: Boat. See the map of Deep Six on the right for the exact location.

Deep Six Deep six dive site is one of the most famous of the Similans. Here you can see very beautiful hard c... Julien 4

Fishes you may spot while diving Deep Six

  • Barracuda Barracuda
  • Fusilier Fusilier
  • Grouper Grouper
  • Leopard Shark Leopard Shark
  • Manta Ray Manta Ray
  • Napoleon Wrasse Napoleon Wrasse
  • Parrotfish Parrotfish
  • Trevally Trevally
  • Whitetip Shark Whitetip Shark

... and more fishes & sea life, Dogtooth Tuna, Jack, Rainbow Runner

Photos

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Diving Reviews for this region

Similan Islands

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Liveaboard Reviews in Similan Islands

Sawasdee Fasai

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Sawasdee Fasai is a good boat for divers who like a full day underwater and room to spread out afterwards. Four nights carry the trip from the Similans’ granite scenery to the northern pinnacles, with Richelieu Rock given a full day in the sample progr

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MV Smiling Seahorse

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Thailand Master (The Phinisi)

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Photos: Thailand Master operator gallery via LiveAboard.com.

Thailand Master (The Phinisi) Liveaboard Review

Andaman Tritan

Andaman Tritan

The 24.5 meters Andaman Tritan is a liveaboard offering scuba diving cruises to the Similan Islands, Tioman and Anambas & Igara. The vessel offers different lengths & itineraries depending on the destination. . Boat Cabins & Layout The Anda

Andaman Tritan Liveaboard Review

MV Pawara

MV Pawara

Pawara photo gallery: operator imagery supplied through LiveAboard.com. Photos are undated; the confirmed cabin allocation governs your booking.

MV Pawara Liveaboard Review

MV Oktavia

MV Oktavia

The 30 meters Oktavia is a liveaboard operating in Thailand, more specifically cruising to the Similan Islands. Indeed, the sturdy vessel promised a nice calm voyage on the Andaman Sea. . Boat Cabins & Layout The Oktavia welcomes a maximum of 20 gu

MV Oktavia Liveaboard Review

South Siam 3

South Siam 3

The 30 meters South Siam 3, also called Somboon 3, is a liveaboard operating in Thailand. Indeed, the dive boat offers flexible itineraries including the best dive sites of Thailand such as the Similan Islands, Koh Bon, Tachai, Surin and Richelieu Rock

South Siam 3 Liveaboard Review

South Siam 4

South Siam 4

Thailand · Similan Islands & Richelieu Rock · Updated 9 November 2026

South Siam 4 Liveaboard Review

Gentle Giant

Gentle Giant

Gentle Giant makes room for both halves of Thailand’s Andaman Sea. Her four-night cruises concentrate on the Similans and northern pinnacles; selected six-night journeys continue south to Koh Haa and Hin Daeng–Hin Muang. That longer trip is the interes

Gentle Giant Liveaboard Review

The Junk

The Junk

A unique experience, The Junk “June Chian Lee” (“Respect Wind Travel Forever”) was originally built and launched in 1962. Unlike any other diving vessel touring the Indian Ocean around Thailand, The Junk was originally a working ship manufactured to ca

The Junk Liveaboard Review

Dive spots reviews in Similan Islands

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Anita's reef is one of the best dive site of the Similan Islands. The topography at the bottom is outstanding with a hug...
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The Fantasea Reef dive site is one of the best spots of the Similan archipelago. It is located a bit offshore off the we...
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The Hide Away Bay dive site is located a bit further South West of Anita's reef. It is sometimes called Barracuda Point....
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Beacon point dive site offers the chance to spot many stingrays, reef sharks and also the beautiful leopard shark. It is...
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Christmas Point dive site in the Similans consists of large rocks and a nice drop off. It is a good spot to observe whit...
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East of Eden dive site is one of the Top dive spots of the Similan Islands! The coral formations are amazing with a real...
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Beacon Beach is actually a wreck dive on a former 27 m Similan liveaboard, the Atlantis X, sunk in 2002 in 30 m of water...
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Rocky Point dive site is located on the south East of the Similan Island number 1. The site features several submerged r...
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Bird Rock dive site is also called the Chinese Valley. It is a famous spot to observe giant Moray eels, but dont get too...

Diving centers in Similan Islands

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