Ko Samae San, Chonburi

Crystal-clear waters and pristine coral reefs make Ko Samae San one of Chonburi’s most remarkable marine destinations. This small island off the coast of Sattahip serves as a protected naval area, which has inadvertently preserved its underwater ecosystems from overdevelopment. The restricted access means fewer crowds and healthier coral formations than many other Thai islands, creating exceptional conditions for snorkeling and diving enthusiasts.

Vibrant coral gardens teem with tropical fish just meters from the shoreline, where parrotfish graze on coral polyps and schools of angelfish dart between brain corals. The island’s compact size means you can easily explore multiple snorkeling spots in a single visit, each offering different marine life encounters. Above water, the rocky coastline provides dramatic viewpoints overlooking the Gulf of Thailand, while small sandy patches offer perfect spots for beach picnics. The sound of waves lapping against limestone cliffs mingles with seabirds calling overhead, and the salty sea breeze carries hints of the rich marine life below.

Peace defines the Ko Samae San experience, as the naval restrictions naturally limit visitor numbers and commercial development. This creates an almost private island feeling where you can snorkel without jostling for space or enjoy quiet moments on the beach. The sense of discovering something special grows stronger when you realize how well-preserved the underwater world remains compared to busier tourist islands.

Day trips work best since overnight accommodation isn’t available on the island. Speedboats and longtail boats depart from nearby Sattahip pier, with journey times around 15-20 minutes depending on sea conditions. Bring your own snorkeling gear, plenty of water, and reef-safe sunscreen to protect the delicate coral ecosystem. Early morning departures offer the calmest seas and best underwater visibility, making the entry fee worthwhile for serious snorkeling adventures.