The Afrotropic Deserts are found in the sub-Saharan parts of Africa. They can also be found in the southern fringe of the Arabian Peninsula.
The Australasian Deserts are found in a series of lowland arid eco-regions found in the Australian heartland.
The Indo-Malay Region has two hot lowland deserts. THe 2 deserts in this are are the Indus Valley and the Thar desert's.
The Nearctic Deserts span over 1.04 million square miles in North America.
The Neotropic Deserts in South America cover 684,000 million square miles.
The Paleartic realm contains the largest amount of deserts in the world. These deserts cover 9.9 million square miles. This one are contains 63 per cent of all deserts on the planet. The Sahara desert spans 9 million square miles, or 10 per cent of the African continent.