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).

nside 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.