Koh Sirey is less frequently touristed than much of Phuket. It’s technically an island, yet it’s so close to the mainland, separated only by a narrow channel with mangroves.
For authentic Thai culture, visit the friendly sea gypsies there, called the Chao Le, or “people of the sea." The Chao Le were the first inhabitants of Phuket. They live in Laem Tukkae village on the southeast end of Koh Sirey, and will happily welcome you. Shop local, too: There are usually shells and handmade trinkets for sale.