Ocean Spiral is a conceptual city proposed beneath the surface of the ocean

Ocean Spiral: Japanese firm plans underwater city powered by seabed, Japan

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This bold undersea base is planned for 2027 — can it become the 'International Space Station for the oceans'?

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Japanese Company Proposes 'Ocean Spiral,' Underwater Cities to be 3D Printed

OCEAN SPIRAL, Deep Sea Future City Concept, Topics

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Ocean Spiral is a concept for a city beneath the surface of the ocean

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