The Similan Islands (Thai: หมู่เกาะสิมิลัน, RTGS: Mu Ko Similan, Thai pronunciation: [mùː kɔ̀ʔ si.mi.lan], Malay: Kepulauan Sembilan) is a continental archipelago in the Andaman Sea off the coast of, and part of, Phang Nga Province in southern Thailand. It is the maritime border between India and Thailand. It was established as Mu Ko Similan National Park in 1982 after a one-year assessment by the forestry department.[1]