The Similan Islands – Thailand’s Underwater Paradise

Located about 70 kilometers off the coast of Phang Nga Province in the Andaman Sea, the Similan Islands are considered one of Thailand’s most breathtaking natural treasures. This archipelago of eleven small islands is world-renowned for its crystal-clear waters, vibrant coral reefs, and incredible marine biodiversity. Recognized as part of the Mu Ko Similan National Park, the islands are a dream destination for divers, snorkelers, and anyone seeking pristine beaches far away from the crowds. Unlike many popular Thai beaches, the Similans remain relatively untouched, offering travelers an authentic and peaceful experience surrounded by nature’s finest.

What to See
The main highlight of the Similan Islands is undoubtedly its underwater world. The area is ranked among the top diving destinations in the world, thanks to its rich coral gardens, dramatic underwater rock formations, and sightings of manta rays, whale sharks, sea turtles, and countless tropical fish. Snorkeling is equally rewarding, with shallow reefs teeming with colorful life.
Above water, the islands boast powdery white-sand beaches framed by lush jungle. Island No. 8, also known as Koh Similan, is home to the iconic Sail Rock viewpoint, offering panoramic vistas of turquoise waters and granite boulders scattered across the shoreline. Koh Miang (Island No. 4) is another must-visit, featuring twin bays and calm beaches ideal for swimming.

Travel Tips
The Similan Islands are only open to visitors from mid-October to mid-May.Access is typically via speedboat from Khao Lak or Phuket, with day trips and liveaboard tours available. If possible, consider a liveaboard experience to fully explore the islands.
Pack essentials such as reef-safe sunscreen, snorkeling or diving gear (if not provided), and plenty of water.
Respect the park rules: do not touch corals or disturb marine life, and always take your trash with you to help preserve the fragile ecosystem.

Final Thoughts
The Similan Islands offer a rare glimpse of untouched beauty, both above and below the surface. Whether you are diving into the depths with schools of colorful fish, hiking to a viewpoint overlooking endless turquoise waters, or simply relaxing on soft white sand, the Similans embody the essence of paradise.
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Post by Moo Ping | Sep 4, 2025