Some of the best snorkeling in Costa Rica is located right off of our beautiful coastline here in Guanacaste. Take a dive into the beautiful waters of the Pacific Ocean and discover a captivating under water world full of life and color! The 20 islands that make up the Catalinas Islands chain are bathed in pristine water. The islands, as well as the waters that surround them, are home to an abundant array of marine animals, birds, and land animals. Once you experience the myriad of marine species that call these waters home, you will see exactly why snorkelers and divers from around the world make it a point to put the Catalinas Islands on their list of must-see sites.