Koh Mun, Rayong Province, is a small archipelago in the Gulf of Thailand, located off the coast of Klaeng District. It consists of three main islands: Koh Man Nai, Koh Man Klang, and Koh Man Nok. Each island offers a distinct natural landscape and atmosphere, making it a popular destination for tourists seeking tranquil seas, clear waters, and unspoiled nature—something even more pristine than many popular beaches in eastern Thailand. Its relatively short distance from the mainland allows for day trips or overnight stays to fully immerse oneself in the serene Gulf of Thailand.

Koh Man Nai is the most famous island for its marine conservation efforts. It houses a sea turtle conservation center operated by the Department of Fisheries, where sea turtle eggs are hatched, hatchlings are raised, and marine ecosystem research is conducted. Tourists can learn about the sea turtle life cycle, observe the hatchling nursery, and understand the importance of marine conservation firsthand. The island's surroundings also feature small beaches, clear waters, and some shallow coral reefs that remain largely unspoiled. This makes Koh Man Nai more than just a tourist destination; it's also an important learning center for nature and marine ecosystems in Rayong Province.

Koh Man Klang offers a quieter atmosphere with fewer tourists. The island retains much of its natural charm, featuring small beaches interspersed with rocky outcrops. With its crystal-clear turquoise waters during the summer, it's perfect for those seeking a simple, natural getaway. Some tourists choose to snorkel, kayak, or simply relax and enjoy the sea views from the beach. Because the area around the island is more peaceful than other major tourist spots in Rayong, it's ideal for those who want to escape the hustle and bustle and experience a private beach atmosphere.

Koh Man Nok is considered the most famous relaxing island in the Koh Man archipelago. As a private island with resorts, it offers a tranquil atmosphere, fine white sand beaches, and crystal-clear waters where you can see the seabed at times of the day. Many tourists prefer to travel here as couples, on honeymoons, or with families because the island offers high levels of privacy and is free from the crowds of large-scale marine activities found in other coastal areas. In the mornings and evenings, the beach on Koh Man Nok is a beautiful spot to watch the sunrise and sunset, especially on clear days when the sun's rays reflect beautifully on the water's surface.

A popular activity in the Koh Man archipelago is snorkeling to see coral reefs and schools of fish. The waters around the island are clear at various times of the year, particularly during the summer months from approximately November to April. Tourists can find small fish, shallow coral reefs, and various marine life near the shore. Other activities include fishing, kayaking, swimming, and strolling along the beach amidst the tranquil natural surroundings. A key highlight of the Man Islands is that much of the area remains undeveloped commercially, preserving the pristine natural beauty of the eastern coast of Thailand compared to many other marine tourist destinations in the country.

Most people travel to the Man Islands by boat from piers in or near Klaeng district, such as Laem Tan Pier and the piers of various resorts. The journey takes approximately 30-45 minutes, depending on the weather and the type of boat. Since the Man Islands do not have large, regular public ferry services like some of the main tourist islands, tourists usually travel via tour packages, chartered boats, or direct transfer services from their accommodations. This keeps the islands peaceful, uncrowded, and ideal for a truly relaxing getaway amidst nature.

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How to Get There

• Travel to Laem Tan Pier or Chok Kritsada Pier in Klaeng District, Rayong. Take a resort boat or a chartered boat to the islands. The journey takes approximately 30–45 minutes.

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Travel Tips

• Book accommodations early during holidays and peak season.

• Leave early in the morning to catch boat schedules on time.

• Always check the weather forecast before traveling.

• The sea is especially clear from November to April.

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Admission Fees:

• Free admission

Opening Hours:

• The Sea Turtle Conservation Center is open daily from 08:30 – 16:30.