The country’s geography is dominated by the Bengal delta, the largest delta in the world. The country has many rivers and 8,046 km (5,000 mi) of inland waterways. Highlands with evergreen forests are found in the northeastern and southeastern regions of the country. The country also has the longest sea beach and the largest mangrove forest in the world. The country’s biodiversity includes a vast array of plants and wildlife, including the endangered Bengal tiger, the national animal.