Thong Nai Pan Beach, Thong Nai Pan Noi and Thong Nai Pan Yai are twin coves that form a scenic double bay and are the most popular beaches in the east and sunrise side of the island. Both beaches are the image of paradise with softly curved white sand bays surrounded by mountains covered in rich tropical rainforest. The surrounding mountains make these beaches fairly inaccessible with a steep and rutted dirt road the only overland option; though road works have commenced to make it a dual lane concrete road, another way to get to there is by boat from Had Rin or Chaloklum.

There is no coral reef on the east coast of the island, and it is possible to swim at both beaches all year round, though Thong Nai Pan Noi is the best as it's the deepest bay. There is little to see in the way of marine life, but there are some decent waves for body surfing.