It only takes one hour or a little bit more to circle the island.
In the way, you visit the caves, the special rock formations, and all the beauties at sea level.
Don't miss, it’s easy to deal locally in the harbor and not expensive, but, if the caves are your goal do check the tide before leaving, or you may have a bad surprise.
While you wait for the boat inland, there will be people around you trying to sell you a boat circuit in the island.
You better skip it.
Upon arrival, real boatmen will approach, offering their boats, cheaper than the previously booked trips, and, more than that, allowing you to know the exact program of the trip. Inland they always sell the blue cave, but later on, in the island, you will be informed that the entrance is only possible in perfect conditions of surf and tide, and if you paid for it... you need luck to enter.