Sargasso Sea: The World's Only Sea Without Coastlines, Featuring Floating Forests in the Atlantic

In the North Atlantic Ocean lies the Sargasso Sea, uniquely recognized as the world's only sea without coastlines. Spanning approximately 1,100 kilometers in width and 3,200 kilometers in length, it is situated east of the North American continent. Its boundaries are defined by four ocean currents: the Gulf Stream to the west, the North Atlantic Current to the north, the Canary Current to the east, and the North Equatorial Current to the south. These currents circulate clockwise, forming the North Atlantic Subtropical Gyre, with the Sargasso Sea at its center. This marine region is characterized by higher salinity than surrounding waters and exceptional clarity due to its nutrient-poor environment. Furthermore, its boundaries and extent are in constant flux due to the shifting currents, setting it apart from other seas with fixed coastlines. This distinctive characteristic of being a 'sea without a coast' is the origin of its name. The name 'Sargasso' is derived from the brown seaweed, Sargassum, that proliferates in this sea. This seaweed forms vast 'floating forests' on the ocean surface, providing a critical habitat, shelter, and spawning ground for numerous marine species. Diverse organisms, including birds, sea turtles, fish, and invertebrates, depend on these seaweed forests for their survival. In contrast, Indonesian seas, such as the Java Sea bordered by Java, Kalimantan, and Sumatra, or the Flores Sea delineated by numerous islands, have their boundaries clearly defined by landmasses or archipelagos. Even open seas like the Caribbean Sea have land, whether continental or insular, forming parts of their borders. The Sargasso Sea, however, stands apart from any other sea on Earth due to its complete lack of contact with land. Information Source: Mongabay Indonesia