The park's limestone formations contain fossils dating back to the Cambrian period, representing some of the oldest identified rock in Thailand.
The park is a critical nesting ground for endangered green and hawksbill sea turtles.
The iconic 'Stone Arch' on Ko Khai is a natural geological bridge carved by erosion and is a symbol of Satun province.
The park spans two distinct provinces, Satun and Trang, covering both mainland coastal areas and offshore islands.
Many of the park's karst islands are uninhabited, protecting indigenous tropical flora and fauna.
The limestone cliffs provide a habitat for the swiftlets that produce edible bird's nests.
Mu Ko Phetra National Park is a marine conservation area in the Andaman Sea covering approximately 494 square kilometers across Satun and Trang provinces. The park encompasses a cluster of islands characterized by steep limestone cliffs, white sand beaches, and coral reefs. Khao Yai and Khao Lidi are the primary terrestrial features of the mainland section. The islands, including Ko Phetra and Ko Khao Yai, provide significant nesting sites for sea turtles. The geological landscape features sedimentary rocks from the Cambrian period, some dating back over 500 million years. The park is managed by the Thai Department of National Parks, Wildlife and Plant Conservation. It serves as a hub for snorkeling, sea kayaking, and bird watching. The coastline is defined by mangroves and rock formations that protect the interior ecosystems from tidal surges.
The natural stone arch on Ko Khai beach.
Rent a private long-tail boat from Pak Bara Pier to access the more remote islands in the archipelago.
Bring your own high-quality snorkeling gear as rental equipment at some of the smaller islands may be limited or unavailable.
Ensure you carry waterproof bags for your electronics, as boat travel between islands involves significant sea spray.
Attempting to visit during the monsoon season when boat services to remote islands are frequently suspended for safety.
The park often restricts access to specific islands during the rainy season for conservation and safety reasons; always check for temporary closures at the park headquarters.
Avoid touching or stepping on coral reefs while snorkeling; refrain from removing shells or sand from the beaches; observe quiet behavior to avoid disturbing wildlife.
