The Thai government has done a good job in protecting the natural environment. This island and the neighboring islands form the Ko Rang Marine National Park. The coral reefs of Ko Yak Lek are very beautiful. However, the disadvantage of this water area is that it is more than 3 meters deep, so it is not the best place for diving. Ko Tao and Ko Lipe are better. There are also many tourists who come here to swim (most of them wear life jackets for snorkeling), and the big fish are mostly hidden in the coral reefs. Only some smaller fish can be found, but there are few species. In fact, if you come in May, you can also go to Ko Mak and Ko Kuud. However, Ko Rang will also be closed from June to October. Early to mid-May is the best time because the low season just begins.