The Namibian landscape is one of stark contrasts: the vast, orange sand dunes, large plains and savannahs meet with the cold navy-blue waters of the Atlantic. Nearly half of Namibia consists of national parks, conservancies and private game reserves with big and small wildlife including the Big Five (elephant, rhino, buffalo, lion and leopard) and over 20 species of antelope. Along the coast, an array of seals, flamingos and pelicans add a burst of colour and the wetlands of Walvis Bay and Sandwich Harbour lagoons are home to a diverse ecosystem of plants and wildlife. The water and banks of the Okavango and Zambezi River host elephants, crocodiles, hippo and buffalo.