Koh Ngam is a small island of immense geographical and ecological significance, situated in the southeastern region of Koh Chang. Its terrain is famously dubbed the Twin Islands due to two parallel rocky hills joined together by a natural phenomenon known as a Tombolo (sandbar), which stretches over 200 meters with creamy white sand. The inland vegetation is a mix of dry evergreen and coastal plants, maintaining a high level of integrity. Located in a position that provides excellent shelter from wind and waves, the surrounding sea remains exceptionally still and transparent, displaying a distinct Two-tone effect between emerald green and turquoise blue.

In terms of historical and physical significance, Koh Ngam is located near the site of the Battle of Koh Chang in 1941, lending a sense of historical sanctity to these waters, which are protected under Mu Ko Chang National Park. Beneath the surface, the area is rich with rocky reefs and seagrass beds, serving as a vital habitat for rare marine life, including land crabs and sea birds that frequent the sandbar for food during low tide. This semi-enclosed bay structure makes Koh Ngam a natural classroom, showcasing thousands of years of erosion and sediment accumulation that formed a sandbar strong enough to link two islands.

For the visitor experience, Koh Ngam offers Absolute Serenity that is unattainable on the bustling western beaches of Koh Chang, primarily because there are no road access or facilities to disturb nature. The highlight activity is kayaking across Salak Phet Bay, a route that requires physical effort but rewards travelers with world-class scenery. Upon reaching the island, visitors can explore the entire length of the sandbar or relax under the natural shade of pine and coconut trees. The atmosphere shifts with the tides; during peak low tide, the sandbar appears at its widest and most majestic, creating a stark white contrast against the ocean.

Regarding Photography and Natural Architectural Art, Koh Ngam is a paradise for modern documentation, particularly Aeronautical  Photography, which reveals the island’s symmetrical H-shaped structure. The curved sandbar, meeting gentle ripples from both sides, creates a fascinating rhythm of light and shadow. For macro photographers, the rocks and bleached coral fragments along the shore provide excellent subjects for abstract imagery. Meanwhile, painters often use the stillness here as an outdoor studio to capture the silence of the Trat sea on canvas, free from the noise of engines or crowds.

Koh Ngam is the ultimate conclusion of geological wonders blending perfectly with eco-tourism. Standing on a sandbar that connects two islands is not merely a sightseeing trip, but an entry into the heart of an island ecosystem that has been preserved in its most original state. It is a place where time seems to slow down, allowing visitors to truly immerse themselves in the grandeur of nature.

• By Private Boat Charter: You can hire a long-tail boat from Ban Salak Phet or Ban Salak Khok pier directly to Koh Ngam. The journey takes approximately 15–20 minutes.

• By Kayak: Kayaks can be rented from resorts around Salak Phet Bay (such as AANA Resort). Paddling across takes about 30–45 minutes, depending on wind conditions.

• Additional Option: Booking a private boat trip from local operators, which usually includes snorkeling sessions around Koh Ngam in the itinerary.

• Best Visiting Season: December to March offers the calmest and clearest waters, ideal for kayaking across the bay.

• Essential Equipment: Bring trekking or water shoes with thick soles, as the sandbar may contain sharp rocks and coral fragments. Also, prepare waterproof bags for electronic devices.

• Photography: The best time is mid-morning (10:00 – 11:00 AM) when the light hits the sandbar directly, revealing the two-tone sea colors most clearly.

• Food & Supplies: There are no restaurants or convenience stores on the island. Visitors must bring their own water and snacks and are strictly required to take all trash back with them.

• Planning: Check tide charts before traveling during high tide, the sandbar may be submerged, hiding the beauty of the split sea.