Located in Phru Nai subdistrict, to the north-east of ko Yao Yai, Ko Khai is made up of three small private Islands, namely Ko Khai Nai, Ko Khai Nui and Ko Khai Nok. These islands resemble a fried egg from an ariel view, and they occupy the ocean space between Ko Sirae (Phuket) and Ko Yao Yai (Phang-nga).