Ko Man Klang , Ko Kudee and Ko Man Nok , along with Ko Man Nai to the west, are part of Khao Laem Ya/Mu Ko Samet National Park . This official status hasn’t kept away all development, only moderated it. Ko Kudee has a small, pretty sandy stretch, clear water for decent snorkelling and a nice little hiking trail.
The best way to visit is to join a boat tour from Ko Samet.