Its length, from Cape Gracias a Dios to the San Juan delta, is nearly 300 m.
As far as 85° W., and constitutes the frontier until it reaches the sea at Cape Gracias a Dios, after a course of more than 450 m., during which it receives many tributaries.
In addition to the three names of Segovia, Coco or Cocos, and Wanks, which are applicable to the whole river, different parts have from time to time received the names of Cabullal, Cabrugal, Cape River, Encuentro, Gracias, Herbias, Oro, Pantasma, Portillo Liso, Tapacac, Telpaneca, Somoro, Yankes, Yare and Yoro.
In 1508 Ojeda obtained from the Spanish crown a grant of the district from Cape Vela westward to the Gulf of Darien, while the rest of the country from the Gulf of Darien to Cape Gracias-a-Dios was bestowed on his fellow-adventurer, Nicuessa.
Le occurs, as in Old Castilian, in words formed with the suffix ellum (castiellu, portiellu), while modern Castilian has reduced Ce to C. E, i, u, post-tonic for a, e, 0: penes (penas), gracies (gracias), esii (este), frenti, (frente), liechi (leche), nuechi (noche), unu (uno), primeru (primero).
This caused great dissatisfaction among the Indians, who shortly afterwards revolted; and on the 28th of January 1860 Great Britain and Nicaragua concluded the treaty of Managua, which transferred to Nicaragua the suzerainty over the entire Caribbean coast from Cape Gracias a Dios to Greytown, but granted autonomy to the Indians in the more limited Mosquito Reserve (the area described above).
Along the Caribbean Sea from Cape Gracias a Dios southwards to the San Juan delta, and its apex at the Coseguina volcano, on the Bay of Fonseca, which separates Nicaragua on the Pacific side from Salvador.
The low, swampy and monotonous shore of the Caribbean, with its numerous lagoons and estuaries, and its fringe of reefs a,nd islets, contains only three harbours: Gracias a Dios, Bluefields or Blewfields, and Greytown (San Juan del Norte).