Atlantic Ocean

The Ottoman Navy (Turkish: Osmanlı Donanması) or the Imperial Navy (Ottoman Turkish: Donanma-yı Humâyûn), also known as the Ottoman Fleet, was the naval warfare arm of the Ottoman Empire. It was established after the Ottomans first reached the sea in 1323 by capturing Praenetos (later called Karamürsel after the founder of the Ottoman Navy), the site of the first Ottoman naval shipyard and the nucleus of the future navy.

During its long existence, the Ottoman Navy was involved in many conflicts and signed a number of maritime treaties. It played a decisive role in the conquest of Constantinople and the subsequent expansion into the Mediterranean and Black Seas. At its height in the 16th century, the Navy extended to the Indian Ocean, sending an expedition to Indonesia in 1565, and by the early 17th century operated as far as the Atlantic. Commensurate with the decline and modernization of the empire in the late 18th century, the Ottoman Navy stagnated, albeit remaining among the largest in the world: with nearly 200 warships, including 21 battleships, it ranked third after the British and French navies in 1875.

The North Atlantic Current (NAC), also known as North Atlantic Drift and North Atlantic Sea Movement, is a powerful warm western boundary current within the Atlantic Ocean that extends the Gulf Stream northeastward.

The meridian 16° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Europe, Africa, the Atlantic Ocean, the Southern Ocean, and Antarctica to the South Pole.

The 16th meridian east forms a great circle with the 164th meridian west.

The Central American Seaway (also known as the Panamanic Seaway, Inter-American Seaway and Proto-Caribbean Seaway) was a prehistoric body of water that once connected the Pacific Ocean to the Atlantic Ocean, separating North America from South America. It formed during the Jurassic (200–154 Ma) during the initial breakup of the supercontinent Pangaea into Laurasia and Gondwana, forming a mediterranean sea between the Panthalassia and Tethys Ocean, and finally closed when the Isthmus of Panama was formed by volcanic activity in the late Pliocene (2.76–2.54 Ma). The modern-day remnants of the seaway are the Gulf of Mexico, Caribbean Sea and the Central Atlantic region around the Sargasso Sea.

The closure of the Central American Seaway had tremendous effects on oceanic circulation and the biogeography of the adjacent seas, isolating many species and triggering speciation and diversification of tropical and sub-tropical marine fauna. The inflow of nutrient-rich water of deep Pacific origin into the Caribbean was blocked and so local species had to adapt to an environment of lower productivity. It had an even larger impact on terrestrial life. The seaway had isolated South America for much of the Cenozoic, which allowed the evolution of a wholly unique diverse mammalian fauna there. When it closed, a faunal exchange with North America ensued and led to the extinction of many of the native South American forms.

The coastline of Brazil measures 7,491 km, making it the 16th longest national coastline in the world. The coastline touches exclusively the Atlantic Ocean. Brazil's coastline has many geographical features such as islands, reefs, bays, and its 2,095 beaches.

9 of Brazil's 26 states are landlocked, including the Federal District. The capitals of the 17 coastal states are close to the ocean, with the exceptions of Curitiba in Paraná, Porto Alegre in Rio Grande do Sul, Teresina in Piauí, Belém in Pará, and Macapá in Amapá.

Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of 2,780,085 km (1,073,397 sq mi), making it the second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the eighth-largest country in the world. Argentina shares the bulk of the Southern Cone with Chile to the west, and is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. Argentina is a federal state subdivided into twenty-three provinces, and one autonomous city, which is the federal capital and largest city of the nation, Buenos Aires. The provinces and the capital have their own constitutions, but exist under a federal system. Argentina claims sovereignty over the Falkland Islands, South Georgia and the South Sandwich Islands, the Southern Patagonian Ice Field, and a part of Antarctica.

The earliest recorded human presence in modern-day Argentina dates back to the Paleolithic period. The Inca Empire expanded to the northwest of the country in pre-Columbian times. The modern country has its roots in Spanish colonisation of the region during the 16th century. Argentina rose as the successor state of the Viceroyalty of the Río de la Plata, a Spanish overseas viceroyalty founded in 1776. The Argentine Declaration of Independence on July 9 of 1816 and the Argentine War of Independence (1810–1825) were followed by an extended civil war that lasted until 1880, culminating in the country's reorganisation as a federation. The country thereafter enjoyed relative peace and stability, with several subsequent waves of European immigration, mainly of Italians and Spaniards, influencing its culture and demography.

The Marañón River (Spanish: Río Marañón, IPA: [ˈri.o maɾaˈɲon], Quechua: Awriq mayu) is the principal or mainstem source of the Amazon River, arising about 160 km (100 miles) to the northeast of Lima, Peru, and flowing northwest across plateaus 3,650 m (12,000 feet) high, it runs through a deeply eroded Andean valley, along the eastern base of the Cordillera of the Andes, as far as 5° 36′ southern latitude; from where it makes a great bend to the northeast, and cuts through the jungle Ande in its midcourse, until at the Pongo de Manseriche it flows into the flat Amazon basin. Although historically, the term "Marañón River" often was applied to the river all the way to the Atlantic Ocean, nowadays the Marañón River is generally thought to end at the confluence with the Ucayali River, after which most cartographers label the ensuing waterway the Amazon River.

As the Marañón passes through high jungle in its midcourse, it is marked by a series of unnavigable rapids and falls.

The Sargasso Sea (/sɑːrˈɡæsoʊ/) is a region of the Atlantic Ocean bounded by four currents forming an ocean gyre. It is the only named sea without land boundaries. It is distinguished from other parts of the Atlantic Ocean by its characteristic brown Sargassum seaweed and often calm blue water.

The sea is bounded on the west by the Gulf Stream, on the north by the North Atlantic Current, on the east by the Canary Current, and on the south by the North Atlantic Equatorial Current, the four together forming a clockwise-circulating system of ocean currents termed the North Atlantic Gyre. It lies between 20° and 35° north and 40° and 70° west and is approximately 1,100 kilometres (600 nautical miles) wide by 3,200 km (1,750 nmi) long. Bermuda is near the western fringes of the sea. While all of the above currents deposit marine plants and refuse into the sea, ocean water in the Sargasso Sea is distinctive for its deep blue color and exceptional clarity, with underwater visibility of up to 60 m (200 ft).

Cuba, officially the Republic of Cuba, is an island country in the Caribbean. It comprises 4,195 islands, islets and cays, including the eponymous main island and Isla de la Juventud. Situated at the confluence of the Caribbean Sea, Gulf of Mexico, and Atlantic Ocean, Cuba is located east of the Yucatán Peninsula, south of both Florida (the United States) and the Bahamas, west of Hispaniola (Haiti and the Dominican Republic), and north of Jamaica and the Cayman Islands. Havana is the largest city and capital. Cuba is the third-most populous country in the Caribbean after Haiti and the Dominican Republic, with about 10 million inhabitants. It is the largest country in the Caribbean by area. Culturally, Cuba is considered part of Latin America.

Cuba was inhabited as early as the fourth millennium BC, with the Guanahatabey and Taíno peoples present at the time of Spanish colonization in the 15th century. Cuba remained part of the Spanish Empire until the Spanish–American War of 1898, after which it was occupied by the United States and gained independence in 1902. A 1933 coup toppled the democratically elected government of Carlos Manuel de Céspedes y Quesada and began a long period of military influence, particularly by Fulgencio Batista. In 1940, Cuba implemented a new constitution, but mounting political unrest culminated in the 1952 Cuban coup d'état by Batista. His autocratic government was overthrown in January 1959 by the 26th of July Movement during the Cuban Revolution. That revolution established communist rule under the leadership of Fidel Castro. The country under Castro was a point of contention during the Cold War between the Soviet Union and the United States, and the Cuban Missile Crisis of 1962 is widely considered the closest the Cold War came to escalating into nuclear war.

The Virgin Islands (Spanish: Islas Vírgenes) is an archipelago between the North Atlantic Ocean and northeastern Caribbean Sea, located to the immediate east of the main island of Puerto Rico. It generally forms part of the Leeward Islands of the Lesser Antilles in the West Indies of the Caribbean region.

Geologically separated from the Lesser Antilles by the Anegada Passage and from the Greater Antilles by the Mona passage, all the islands except for Saint Croix lie on the same carbonate platform and insular shelf, known as the Puerto Rico Bank, and same tectonic plate, known as the Puerto Rico–Virgin Islands microplate.