The Nile crocodile is an African crocodile and the second largest extant reptile in the world, after the saltwater crocodile. The Nile crocodile is quite widespread throughout sub-saharan Africa, occurring mostly in the central, eastern and southern parts of the continent and lives in different types of aquatic environments such as lakes, rivers and marshlands. The range of this species once stretched northward throughout the Nile, as far north as the Nile delta. Prehistoric populations occurred as far as Israel. On average the Nile crocodile is between 4.1 metres to 5 metres, weighing around 410 kg.