If all the ice melted and sea level rises 216 feet, the world's major cities would be wiped out from the face of the Earth and consumed by the sea.

An interactive map created by the National Geographic can predict this phenomenon and can show the ruinous effect if all ice melted and water surges uncontrollably from the oceans and seas.

In Australia, an inland sea the size of Ireland can wipe out Sydney, Melbourne, Adelaide, Darwin and Perth - which are homes to four out of five Australians.

The predicted rising sea level could transform South Australia's Lake Eyre to a colossal inland sea that would wipe out Murray River and the surrounding area.

In the United States, if sea levels rose by approximately 70 metres, the sea would already consume New York along with the entire and heavily populated east coast. In actuality, the entire Atlantic sea would swallow up Florida and the Gulf Coast. In California, San Francisco's hills would be divided to a group of small islands and the Central Valley would become a giant bay. The Gulf of California will reach north passing the latitude of San Diego.

In South America, the Amazon Basin in the north and the Paraguay River Basin in the south would overflow as Atlantic inlets, and would then wipe out Buenos Aires, Coastal Uruguay and most of Paraguay.

In Europe, London, Venice, the Netherlands, and a large part of Denmark would vanish. The Mediterranean would combine the Black and Caspian seas into a massive body of water.

Africa would then become squalid, impossible for human living conditions, due to Earth's rising heat.

Egypt, Alexandria and Cairo would not be wiped out but will be flooded by the Mediterranean.

China would be heavily flooded, as well as Bangladesh and the coastal parts of India. The deluge of the Mekong Delta would transform Cambodia's Cardamom Mountains into an island.

The interactive map warned that if people "burn out all the Earth's supply of coal, oil and gas, adding some five trillion more tons of carbon to the atmosphere, we'll create a very hot Earth with an average temperature of perhaps 80 degrees Fahrenheit instead of the current 58. Large swaths of it might become too hot for humans. And it would likely be ice free for the first time in more than 30 million years."

Some scientists predicted that the phenomenon would likely take place about 5,000 years from now.