Just when you thought you knew everything about a drone, also known as an Unmanned Aerial Vehicle, (UAV), along comes John Hopkins University Applied Physics Lab team with a whole new upgrade.
Drones can now swim. John Hopkins has developed a drone that can actually stay underwater for months at a time, swim to the surface and then fly when needed. I find this astonishing. This could be perfect for the military, plus security and surveillance companies. These new drones can reportedly also withstand water pressure and corrosion, a tremendous feat.
Pricing for this new advancement hasn’t been established yet. The John Hopkins team said it’s not as expensive as you might think. We certainly are living in times of great technological achievement.
See the video for a demostration. Read more about it in Engadget.
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DigiDame 
Some things, like an invincible drone, scare me a little. It concerns me that no one seems to be watching this—what if drones are used to harm and damage, rather than for constructive purposes?