My quadcopter lost contact with my controller when it went underwater
Why did you put your controller in the lake?
I was aware of the progress with quadcopters. Their ability for autonomous flight is impressive, in fact it is a bit scary. What I was not aware of though was flying robot jellyfish and penguins! Here is a robotic bird, it is radio controlled but you can imagine some of the autonomy of the quadcopters being built in if they could get the weight down. They are probably using helium in the flying jellyfish so perhaps they could build helium buoyancy bags into the birds to let them carry more control hardware.
https://www.youtube.com/watch?v=4l0xavWi7kU