Koh Mai Si is on the northwestern side near Ao Salak Un of Koh Kood, Tambon Koh Kood, Amphoe Koh Kood. It is a private island. It has an area of about 16 square kilometers. On the eastern side of the island, near Koh Kood, there is a pearl farm owned by Mook Thai Co., Ltd., tourists must contact in advance before visiting. On the island there is also a beautiful sunset view point. And open accommodation for tourists who are interested in eco-tourism together with On the west side, there is a beach where you can swim. For more information, call 08 9980 5757.