Had Nuan ( AKA Koh Lan Vak)

Had Nuan, also known as Koh Lan Vak, is a beginner-friendly dive site on Koh Larn island in the Gulf of Thailand near Pattaya. This site offers sheltered reef diving along a section of the island's coastline that provides calm conditions and a gentle depth profile suitable for newer divers exploring the underwater world around this popular day-trip island. The reef features rocky formations with coral growth that creates a modest but engaging dive environment. The sheltered position means conditions are typically calm, making it comfortable for training dives and casual explorations. The underwater terrain mixes sandy patches with coral-covered rock, providing habitat variety that supports a healthy Gulf of Thailand marine community. Fish life includes the species typical of the Koh Larn area, with colorful reef fish providing constant movement and interest. Damselfish, wrasse, and parrotfish are the most visible residents, while the rocky crevices shelter moray eels and the occasional sleeping nurse shark. Schools of snapper gather around the larger formations, and blue-spotted stingrays rest on the sandy areas. Had Nuan offers a pleasant, unpressured dive experience that serves well as part of a multi-site dive day around Koh Larn. The combination of easy conditions, reliable marine life, and the convenience of the island's proximity to Pattaya makes it a practical choice for divers seeking a relaxed Gulf of Thailand reef dive.