* Snorkeling & Diving - Plongée Bouteille
A lot of Dive shops and diving center ( around 16 ) on the island ;
So you are almost sure to find a dive instructeur speaking your language !
* Kayaking - Excursions en Kayak
kayak are available for rent almost at any resort, some resorts even offer free kayaking for their guests.
* Yoga , reiki or Meditation workshops 
Discover Yoga during a 3 or 5 days workshop in an unique setting at Baan Zen Klong Prao
* Thai cooking classes - Cours de cuisine Thai
Have fun while learning cooking and discover the secret of the Healthy thai food. Web info HERE
* Let's go fishing
If you are crazy about fishing, don't miss this opportunity . Koh Chang and the islands around are a paradise for fishermen
* Jungle Trekking - Marche dans la jungle
* Elephant Trekking - Ballade a dos d'éléphants
Koh Mak Activities - Loisirs
* Snorkeling & Diving
- Koh Mak Divers / Paradise Divers / Ploy Scuba Diving
* Smile Koh Mak Thai cooking classes - Cours de cuisine Thai - 4 h / 1200 thb pp
* Bicycling