纽米（Niumi）生物圈保护区位于冈比亚河北岸，北邻塞内加尔的萨卢姆三角洲生物圈保护区。在保护区内，红树林遍布沿海地区和河岸，而在下游地区，醒目的红色石灰岩地层点缀在热带森林和开阔的热带草原林地之间。

纽米生物圈保护区（冈比亚） © Department of Parks and Wildlife Management, c/o Ministry of Environment, Climate Change and Natural Resources, GIEPA House. Kairaba Avenue

纽米生物圈保护区（冈比亚） © Department of Parks and Wildlife Management, c/o Ministry of Environment, Climate Change and Natural Resources, GIEPA House. Kairaba Avenue

纽米生物圈保护区（冈比亚） © Department of Parks and Wildlife Management, c/o Ministry of Environment, Climate Change and Natural Resources, GIEPA House. Kairaba Avenue

纽米生物圈保护区（冈比亚） © Department of Parks and Wildlife Management, c/o Ministry of Environment, Climate Change and Natural Resources, GIEPA House. Kairaba Avenue

© Department of Parks and Wildlife Management, c/o Ministry of Environment, Climate Change and Natural Resources, GIEPA House. Kairaba Avenue

该生物圈保护区与宝博龙（Bao Bolong）湿地保护区和几处国家森林一道，守护着西非最后的原始红树林。值得一提的是，该生物圈保护区包含一处拉姆萨尔湿地和教科文组织世界遗产地詹姆斯岛及附近区域，后者是16世纪和17世纪被奴役的人民在被运往美洲之前的关押地。

该生物圈保护区占地1937平方公里，约有17.8万居民，他们主要以农业和渔业为生。这是冈比亚的第一个生物圈保护区。