The park serves as one of the most significant habitats for the dugong population in the Andaman Sea.
The landscape includes the emerald-colored water of the Tham Morakot (Emerald Cave), which requires swimming through a sea tunnel to access an interior beach.
The park's seagrass beds are the primary food source for the local dugong colony.
The limestone karsts found within the park are remnants of ancient marine reefs dating back millions of years.
Hat Chao Mai was designated as Thailand's 46th national park in 1981.
The park spans both land-based coastal forests and protected marine environments.
Hat Chao Mai National Park covers 230 square kilometers across the Sikao and Kantang districts of Trang Province, Thailand. The park features a diverse ecosystem including limestone mountains, seagrass beds, mangrove forests, and seven offshore islands. It is a vital sanctuary for the endangered dugong, which congregates in the seagrass meadows near Libong Island. The coastline is defined by pristine white sandy beaches such as Hat Yong Ling and Hat Chao Mai. The park encompasses several caves, including the Tham Chao Mai cave system. Marine life in the area is diverse, with thriving coral reefs surrounding the smaller islands like Ko Muk. Visitors can explore the landscape through jungle trails and coastal paths. The park is managed under the Thai Department of National Parks, Wildlife and Plant Conservation.
The interior beach hidden within the Emerald Cave (Tham Morakot) at Ko Muk.
Visit during low tide to safely access the cave systems and coastal rock formations.
Bring specialized underwater cameras or gear, as the marine biodiversity in the seagrass beds is the primary draw.
Consult local guides for boat trips to the islands, as currents can be unpredictable for independent swimming.
Do not attempt to swim through sea caves without a professional guide or during high tide, as water levels can rise rapidly.
Some offshore islands and specific caves are periodically closed during the monsoon season for ecological restoration and safety.
Maintain silence near seagrass beds to avoid disturbing dugongs, do not touch coral reefs, and adhere to 'leave no trace' principles.
