The Similan Islands are a marine national park in Phang Nga province, famous for clear water, granite boulders, coral reefs, snorkelling, and world-class diving. Most travellers visit by day trip or liveaboard from Khao Lak or Phuket, so costs are driven by boat access, park fees, and tour inclusions.
Visit the Similan Islands for some of Thailand's clearest Andaman water, snorkelling, diving, and dramatic island viewpoints.
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Check live entry documents and quarantine rules for Thailand.