An architect has revealed his spectacular plans for the world's first underwater skyscrapers, which will be capable of holding 20,000 people.

Vincent Callebaut from Belgium says has he designed the self-sufficient oceanscrapers as a viable place for humans to live to reduce the carbon footprint on the planet.

The eco-friendly structures don't require dangerous fossil fuels as they produce their own energy and heat.

Architect Vincent Callebaut, who has designed the world's first underwater skyscraper and village, which can hold 20,000 people

Mr Callebaut says has he designed the self-sufficient oceanscrapers as a viable place for humans to live

Each oceanscraper has a jellyfish-like structure - the entrance and docks are found at the surface and then the structure spirals down up to depths of 1,000 metres

And these images show plans for Mr Callbaut's 'Aequorea', a village made up of the oceanscrapers.

Each oceanscraper has a jellyfish-like structure - the entrance and docks are found at the surface and then the structure spirals down up to depths of 1,000 metres (0.6 miles).

Inside the underwater structures are homes, offices and workshops, science laboratories, sea farms, agricultural areas, shared orchards with grass and food gardens.

Fresh drinking water is produced by a power plant, which uses the in-depth pressure to counteract osmotic pressure and separate the water from salt.

The entrance to one of the underwater skyscrapers, which don't require dangerous fossil fuels as they produce their own energy and heat

Mr Callebaut believes that the underwater structures will be viable places where humans can live

Inside the underwater structures are homes, offices and workshops, science laboratories, sea farms, agricultural areas, shared orchards with grass and food gardens

Air is renewed naturally by convection through wind chimneys found in the tower or by an oxygen station.

And Mr Callebaut says food comes from coral reefs, farming fields and fishing.

He said it is possible to farm fruit and vegetables inside the eco-villages as well as fishing in the ocean.

Mr Callebaut also suggests that these eco-villages, which are 500 metres wide and have 250 floors, are spread across the world's major oceans.

Each eco-village costs £1,430 every square metre to build.

The top of the buildings are above the surface of the water and they spiral down up to 1,000 metres