Heading away from Thalay Wak to the West, you will understand why Koh Kai is called Chicken Island. From a distance, the limestone on the island forms a huge chicken head-shaped totem. You’ve got to go there to see it.
Right around the corner of the island is an area of shallow water meant for snorkeling and feeding the Tiger fish that you can view and touch from up close. If the fish aren’t fascinating enough, you can always look at the coral and reef on the ocean floor.