Complex sentence: The inhabitants of the area are from many ethnic groups (Burmese, Chinese, Karen, Indian, Mon) but the Salone or Moken, are famous as the Sea Gypsies they are said to be related to island tribes from Malaysia.
Split into simpler sentences: The inhabitants of the area are descended from many ethnic roots (Burmese, Chinese, Karen, Indian, Mon, Salone). The Salone or Moken, are famous as the Sea Gypsies they are said to be related to island tribes from Malaysia.