Next-gen drones will fly and dive into the sea like pelicans
Forget flying cars – flying submarines are about to make a splash. The US navy is developing a souped-up version of underwater drones that will boast the ability to get airborne.
The drones are known as gliders because they vary their buoyancy to glide through the water for great distances on little power. In 2009, one crossed the Atlantic without recharging.
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