Koh Lanta is also an excellent spot for any level of scuba divers. The most popular sites to explore are Hin Daeng (Red Rock), and In Muang (Purple Rock). Hin Daeng is famous for the soft red corals and silver wall for many kinds of beautiful sea animals and fish to cruise past. Hin Muang is famous for its soft purple coral growing along Thailand’s highest vertical wall. Koh Ha is also another option for the divers to explore the swim-through alluring caverns.