Bangladesh is located in the Indomalayan realm, and lies within four terrestrial ecoregions: Lower Gangetic Plains moist deciduous forests, Mizoram–Manipur–Kachin rain forests, Sundarbans freshwater swamp forests, and Sundarbans mangroves. Its ecology includes a long sea coastline, numerous rivers and tributaries, lakes, wetlands, evergreen forests, semi evergreen forests, hill forests, moist deciduous forests, freshwater swamp forests and flat land with tall grass. The Bangladesh Plain is famous for its fertile alluvial soil which supports extensive cultivation. The country is dominated by lush vegetation, with villages often buried in groves of mango, jackfruit, bamboo, betel nut, coconut and date palm. The country has up to 6000 species of plant life, including 5000 flowering plants. Water bodies and wetland systems provide a habitat for many aquatic plants. Water lilies and lotuses grow vividly during the monsoon season. The country has 50 wildlife sanctuaries.