Canarreos Archipelago is an archipelago south of Cuba. It is located in the Caribbean Sea, at 21.6394444° N 82.2361111° W. Largest island of the archipelago is Isla de la Juventud, the second largest is Cayo Largo del Sur. // Ecology A view of the Caribbean Sea from the Dominican Republic coast The Caribbean is home to about 9% of the worlds coral reefs covering about 20,000 square miles, most of which are located off the Caribbean Islands and the Central American coast. ... The Isla de la Juventud (Spanish) or Isle of Youth (English) is the largest island of Cuba after Cuba proper. ... Shallow water surrounds Cayo Largo, evidenced by the lighter shade of blue around the islands perimeter. ...