. Sea Inside (ทะเลใน)

• Sea Inside is a hidden saltwater lagoon located within the island of Ko Mae Ko. This lagoon is famous for its stunning emerald green waters surrounded by towering limestone cliffs. It's one of the most picturesque spots in Ang Thong National Park.

• Access: The lagoon is accessible via a short hike up a hill that offers panoramic views of the surrounding islands. Once at the top, you can descend a series of steps to reach the water. The lagoon is relatively enclosed, giving it the feel of being a hidden, secret place surrounded by nature.

2. Ko Mae Ko (เกาะแม่เกาะ)

• Ko Mae Ko is one of the islands in Ang Thong National Marine Park, which consists of 42 islands, all known for their stunning natural beauty, white sandy beaches, and crystal-clear waters.

• Activities: Visitors can enjoy kayaking in the calm waters of the lagoon, snorkeling, and hiking to the viewpoint to capture breathtaking photos of the landscape. The island is a great spot for nature lovers and adventure seekers.

• Marine Park: The Ang Thong National Marine Park itself is renowned for its diverse marine life, limestone formations, and opportunities for eco-tourism. The park is home to a variety of birds, monkeys, and other wildlife.

3. Best Time to Visit

• The best time to visit the area is during the dry season from November to April, when the weather is more predictable and ideal for outdoor activities.

ทะเลใน and Ko Mae Ko are considered some of the most scenic and tranquil destinations in Thailand, offering visitors a chance to explore beautiful nature, clear waters, and secluded areas. It’s a perfect location for a peaceful day trip or eco-tourism adventure.