An hour by boat off the coast of Ko Samui, these tiny islands appear as rocks floating on the surface of the sea. On a daytrip, enjoy swimming in the park's magnificent waters, but also a walk uphill to experience the pristine nature of these protected islets. From the summit of Ko Pa Luey, the largest island, you can admire the entire archipelago. Make sure you take your swimming costumes, cameras and sturdy shoes (to offer protection against the rocks).