9) Guilligan Island, Gúanica – Aurora’s Key or Guilligan’s Island is part of the Dry Forest Reserve of Guánica. As in all beaches, you will find palm trees, but here the beautiful mangroves dominate the area. It is known for its famous channels perfect for snorkeling, swimming, or just to relax in a raft. The calm and crystal clear water of this place will make you feel in a swimming pool. To get there you have to get transported by boat, but that is part of the fun. It has several gazebos and BBQ's, but if you not have food, you can order it in the restaurant where the boat leaves and for free they will bring to you at the requested time.