Caribbean Sea, Arm of the Atlantic Ocean. It covers about 1,063,000 sq mi (2,753,000 sq km) and washes the northern coast of South America, eastern Central America, and eastern Mexico. The Caribbean Sea is home to the second-largest barrier reef in the world, the Mesoamerican Barrier Reef, and the largest reef system in the Northern Hemisphere. It runs 620 miles along the coasts of Mexico, Belize, Guatemala, and Honduras. The Caribbean Sea (Spanish: Mar Caribe; French: Mer des Caraïbes; Haitian Creole: Lanmè Karayib; Jamaican Patois: Kiaribiyan Sii; Dutch: Caraïbische Zee; Papiamento: Laman Karibe) is a sea of the Atlantic Ocean in the tropics of the Western Hemisphere. It is bounded by Mexico and Central America to the west and southwest, to the north by the Greater Antilles starting with Cuba, to the east by the Lesser Antilles, and to the south by the northern coast of South America. The Gulf of Mexico lies to the northwest. The entire area of the Caribbean Sea, the numerous islands of the West Indies, and adjacent coasts are collectively known as the Caribbean. The Caribbean Sea is one of the largest seas and has an area of about 2,754,000 km2 (1,063,000 sq mi). The name Caribbean derives from the Caribs, one of the region's dominant Native American groups at the time of European contact during the late 15th century. After Christopher Columbus landed in the Bahamas in 1492, the Spanish term Antillas applied to the lands; stemming from this, Sea of the Antilles became a common alternative name for “Caribbean Sea” in various European languages. During the first century of European colonization, Spanish dominance in the region remained undisputed. From the 16th century, Europeans visiting the Caribbean region distinguished the “South Sea” (the Pacific Ocean south of the isthmus of Panama) from the “North Sea” (the Caribbean Sea north of the same isthmus). The International Hydrographic Organization defines the limits of the Caribbean Sea as follows: On the North. In the Windward Channel – a line joining Caleta Point (74°15′W) and Pearl Point (19°40′N) in Haiti. In the Mona Passage – a line joining Cape Engaño and the extreme of Agujereada (18°31′N 67°08′W) in Puerto Rico. Coral reefs in the British Virgin IslandsEastern limits. From Point San Diego (Puerto Rico) Northward along the meridian thereof (65°39′W) to the 100-fathom line, thence Eastward and Southward, in such a manner that all islands, shoals and narrow waters of the Lesser Antilles are included in the Caribbean Sea as far as Galera Point (Northeast extremity of the island of Trinidad). From Galera Point through Trinidad to Galeota Point (Southeast extreme) and thence to Baja Point (9°32′N 61°0′W) in Venezuela.Note that, although Barbados is an island on the same continental shelf, it is considered to be in the Atlantic Ocean rather than the Caribbean Sea. What are facts about the Caribbean sea? It's technically part of the Atlantic Ocean. … It takes its name from the natives who lived there. … 9% of the world's coral reefs are in the…