Drone that flies and swims - GIF

Drone that flies and swims.

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Previously:

https://www.homemadetools.net/forum/...048#post137966
https://www.homemadetools.net/forum/...3604#post99572
https://www.homemadetools.net/forum/...724#post136804
https://www.homemadetools.net/forum/...364#post135219
https://www.homemadetools.net/forum/...1463#post74446
https://www.homemadetools.net/forum/...808#post133343
https://www.homemadetools.net/forum/...3663#post99719

Irwin Allen, eat your heart out.
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(Voyage to the Bottom of the Sea, 1960s movie and TV series which featured a flying sub.)

Necessity is the mother of invention... and so are old sci-fi series apparently!