Puerto Rico

The island of Puerto Rico is almost rectangular in shape, and is the smallest and the most eastern island of the Greater Antilles [Glos.]. Its coasts measures approximately 580 km, and if the adjacent islands Vieques and Culebra are included the coast measures approximately 700 km. To the north and south seas capes measure 8.525 m for the Grave of Puerto Rico and 5.000 m for the Grave of Tanner. In addition to the principal island, the Commonwealth includes: Vieques, Culebra, Culebrita, Palomino (known by some by the Spanish Virgin Islands), Mona, Monito and various others isolated islands. Deep oceans waters fringe Puerto Rico. The Mona Passage, which separates the island from Hispaniola to the west, is about 75 miles (120 km) wide and more that 3,300 feet (1,000 meters) deep. Off the northern coast is the 28,000 feet (8,500 meters) deep Puerto Rico Trench, and to the south the sea bottom descends to the 16,400 feet (5,000 meters) deep Venezuelan Basin of the Caribbean.