SIMILAN & SURIN ISLANDS
The North Andaman Sea is Thailand’s premier destination for scuba diving, snorkeling, and marine adventures. Stretching along the coast of Phang Nga and Krabi Provinces, this spectacular region is home to the world-famous Similan Islands and Surin Islands, two of Thailand’s most iconic national parks for divers. With crystal-clear waters, vibrant coral reefs, and an incredible diversity of marine life, the North Andaman Sea is a must-visit for underwater enthusiasts from around the globe.
The North Andaman Sea offers some of the best diving experiences in Southeast Asia:
Similan Islands: Granite islands with rainforest canopies, white sandy beaches, and pristine coral reefs teeming with manta rays, whale sharks, sea turtles, and pelagic species.
Surin Islands: Protected by Thai National Park status and UNESCO programs, these islands boast verdant forests, unspoiled beaches, and rich marine biodiversity, including the legendary Richelieu Rock dive site.
Year-Round Marine Life: From colorful reef fish to macro species like nudibranchs, shrimps, and pipefish, the North Andaman Sea provides exceptional encounters for photographers, marine researchers, and all levels of divers.
Similan Islands: Dive famous sites like West of Eden, Elephant Head Rock, Koh Bon, and the offshore Koh Tachai Pinnacle, where giant mantas, whale sharks, and schooling pelagics are often spotted.
Surin Islands: Explore Richelieu Rock, Koh Khai, Koh Chi, and Hin Rap, offering drift dives, pinnacles, and shallow reefs suitable for beginners and advanced divers alike.
Healthy Coral Reefs: Despite past challenges from coral bleaching and tsunamis, the North Andaman Sea is home to thriving soft and hard corals and abundant marine life.
To protect this fragile ecosystem, visitor numbers are limited, and diving requires a national park permit, arranged through accredited operators. Strict rules preserve the underwater environment, ensuring sustainable tourism and continued biodiversity.
Whether you are a beginner diver, seasoned scuba professional, or underwater photographer, the North Andaman Sea offers unparalleled diving adventures in Thailand. From shallow coral gardens to deep pinnacles with manta rays and whale sharks, this region remains a world-class destination for eco-tourism, marine exploration, and unforgettable underwater experiences.