Similan Islands
Similan Islands Day Trip
Diving day trip from Khao Lak to the Similan Islands, including Koh Bon and Koh Tachai.
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SSI Diamond dive centre · Khao Lak, Thailand
Dive the Similan Islands with Sea Turtle Divers
Small-group day trips to the Similans, Koh Bon, Koh Tachai and Richelieu Rock, SSI courses from your first breath to Divemaster, snorkelling trips and liveaboards.
Small groups
Relaxed dives with plenty of time underwater and a guide who knows the sites.
SSI Diamond centre
Courses from Try Scuba to Divemaster, taught in English and German.
Eco-minded diving
We care about the reefs we dive, and about the turtles we're named after.
Ways to dive with us
Day Trips The Similan and Surin Islands, Koh Bon, Koh Tachai and Richelieu Rock, in a day from Khao Lak. Explore Diving Courses Start with Try Scuba or Open Water, or level up — SSI courses from beginner to Divemaster. Explore Liveaboards Several days at sea: more dives, remote sites and the best of the Andaman Sea. Explore
Day trips
Surin & Richelieu Rock
Surin Islands & Richelieu Rock Day Trip
Diving day trip from Khao Lak to Richelieu Rock and the Surin Islands, one of Thailand's best dive sites.
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Start or level up your diving
Beginner
Try Scuba (Discover Scuba Diving)
Your first breaths underwater with an SSI instructor: no experience needed.
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Beginner
SSI Open Water Diver
Your first full diving licence: theory, pool or shallow-water training and open-water dives.
From €499
Advanced
SSI Advanced Adventurer
Try five different specialty dives and build skills and confidence.
From €715
Sea Turtle Divers · Khao Lak
Ready to dive the Similans?
Tell us what you'd like to do: a first try, a course, a day on the Similans or Richelieu Rock, or a few days on a liveaboard. We'll help you plan it in small groups, with safety first on every dive.
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