See all the different beaches and amaze at the beauty of places that are unreachable over land. A big part of the island is covered in palms and other trees, which gives it, along with the turquoise waters, a real tropical image.
If you want, you can get out at some of the deserted beaches and swim or walk around. Simply hire a boat and a boatman, and tell him where you want to go. The price is around $20 an hour for a boat (which can be easily shared by up to six people).
Ask your hotel staff to arrange this or to refer you to somebody.