Ko Muk and Tham Morakot: the most wonderful island in the park, is located 30 minutes by boat from the Khuantungku pier. There is a fishing village on its eastern coast. The other areas abound in limestone cliffs which is home to numerous swallows. There is a truly amazing place called Tham Morakot where a lagoon with a small sandy beach is surrounded by high cliffs. The entrance to Tham Morakot is mostly underwater and can be entered only at low tide.

Tham Lot: Similan in appearance but larger than the cave at KO Thalu, this cave is about 100 metres long and a small boat may pass through it.