Koh Ngam Yai / Rhino Island

Koh Ngam Yai, also known as Rhino Island, is a beginner-friendly dive site near Chumphon in the Gulf of Thailand, a small island whose surrounding reef provides easy and enjoyable diving at a maximum depth of sixteen meters. The island sits in the Chumphon area's island chain, offering accessible reef diving in waters that benefit from their position between the more famous destinations of Koh Tao and the mainland. The reef around Koh Ngam Yai features healthy coral growth on the island's rocky foundations. Hard corals form the reef structure while soft corals and anemones add color and movement. The sixteen-meter depth allows generous bottom time, and the relatively sheltered conditions create comfortable diving for newer divers. The island's position in the Gulf means water quality is generally good. Fish life is diverse and typical of healthy Gulf reef systems. Schools of snappers and fusiliers provide mid-water movement, while colorful reef fish animate the coral gardens. The rocky crevices shelter moray eels and groupers, and blue-spotted stingrays rest on the sandy patches. Turtles occasionally visit the reef. Koh Ngam Yai offers accessible diving in the Chumphon area that showcases the Gulf of Thailand's reef quality outside the major tourist diving centers. The combination of healthy reef, reliable marine encounters, and easy conditions makes it a pleasant stop for divers exploring this stretch of the Gulf coast.