One of the best attractive of Old Providence and Santa Catalina is its spectacular and wonderful submarine landscapes. Its inner lagoons and the extensive barrier reef of 32 kilometers in length of great beauty, enclose a great biodiversity. This incredible coralline formation is considered the second most extensive one of the Caribbean and one of the richest and better preserved. Their spectacular structures and the wealth of the ecosystems, their marine fauna and flora attract divers from around the world, that explore and are marveled with cracks, caves and enormous walls full of life, which conform the reef. To dive in Old Providence and Santa Catalina is to submerge in paradise. For an incredible immersion in the submarine world of these beautiful islands, take with you the Diving Guide of old Providence and Santa Catalina Islands. http://www.idea.unal.edu.co/public/guia_buceo.html We have good diving schools with experienced instructors and dive masters that will take you to discover and to marvel yourself with the splendor of our submarine world. Do not miss the boat trip around the islands, where it is possible to appreciate the beautiful insular landscape. During this you will be able to observe surprising geologic formations like Morgan’s Head , "Split Hill" and Basalt Cays north of Santa Catalina or to visit the beautiful beaches that this magical place offers. Visit the Natural National Park Old Providence McBean Lagoon and get into its exuberant mangroves and calm lagoons. In this place you will also find the exotic Crab Cay and Three Brothers, ideal places to snorkel and to enjoy the sea breeze.