Swimming without an engine

Using nothing but 3D printing, scientists have developed a paddling submarine that requires no engine, propellant or power supply.

Swimming without an engine

Using nothing but 3D printing, scientists have developed a paddling submarine that requires no engine, propellant or power supply.

Tue 5 Jun 18 from ScienceDaily

Swimming without an engine, Tue 5 Jun 18 from Eurekalert

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