The US military's massive unmanned 'Manta Ray' submarine cleared its first sea test
One photograph of the Manta Ray shows it sitting adjacent to a support boat, and another shows it with people standing on top ...
Business Insider9y
Floating city looks like a manta ray
An curved arrow pointing right. French architect Jacques Rougerie has designed a 3,000-foot-long, manta-ray-shaped vessel capable of hosting 7,000 people. The city of Mériens will be a floating ...
Business Insider9y
Floating city looks like a manta ray
An curved arrow pointing right. French architect Jacques Rougerie has designed a 3,000-foot-long, manta-ray-shaped vessel capable of hosting 7,000 people. The city of Mériens will be a floating ...