Scattered across the Andaman Sea off Thailand’s west coast, the Similan Islands form a protected national park renowned for their striking granite boulders, powdery white beaches and remarkably clear waters. Reached by boat from Phuket or Khao Lak, they offer some of the country’s finest snorkelling and diving, with vibrant coral reefs, reef sharks and kaleidoscopic fish. Above the surface, jungle-covered interiors and viewpoints reveal sweeping ocean panoramas. The air carries salt and sun-warmed stone, while waves lap gently against quiet coves. Strict protections keep the islands pristine, prioritising environmental conservation and offering a simple, untamed escape for nature lovers.