Kayaking and snorkelling
Kayaking around the coast is a very enjoyable pastime, and the dozens of tiny islands visible from eastern shorelines make enticing destinations for experienced paddlers; kayaks can be rented through Ko Yao Noi hotels for about B300 per day. Just about every hotel and travel agent sells kayaking and snorkelling trips to Ko Hong and other islands in Ao Phang Nga.
Diving trips and courses on the island are the speciality of Koh Yao Diver, where two local dives cost B3600, two dives at the reefs around Phi Phi in a longtail B5520, and the Openwater course is B16,680.
Ko Yao Noi is fast becoming a respected destination for rock-climbers, who appreciate the fresh sites and uncrowded routes compared to the hectic scene at nearby Ton Sai and Railay. There are over 150 bolted routes on the island, from beginner level to advanced (5 to 8A), established by the American and Thai climbers who run The Mountain Shop in Ban Tha Kao. Many routes are over water and accessible only by boat, or at the least via a hike off the dirt track to Paradise hotel.