Guinea-Bissau shares border with Guinea
Geography
Guinea-Bissau is bordered by Senegal to the north and Guinea to the south and east, with the Atlantic Ocean to its west. It lies mostly between latitudes 11° and 13°N (a small area is south of 11°), and longitudes 11° and 15°W.At 36,125 square kilometres (13,948 sq mi), the country is larger in size than Taiwan or Belgium. 
The highest point is Monte Torin with an elevation of 262 metres (860 ft). Its terrain is mostly low coastal plains with swamps of the Guinean mangroves rising to the Guinean forest–savanna mosaic in the east. Its monsoon-like rainy season alternates with periods of hot, dry harmattan winds blowing from the Sahara. The Bijagos Archipelago lies off of the mainland. The country is home to two ecoregions: Guinean forest–savanna mosaic and Guinean mangroves.
adjoins borders neighbors is adjacent to