(More) Fictitious Planet Details. Answered
You may have seen my last question (I'm not counting on it), but if you haven't, I should tell you that I am creating a planet that can support life. I am creating an insect-like creature that flies and swims via silent propulsion.
Could an animal develop a method of that propulsion? I am thinking of a couple of methods in particular.
It could be MHD- http://en.wikipedia.org/wiki/Magnetohydrodynamic_drive
It could be like the Dyson fan-http://electronics.howstuffworks.com/gadgets/home/dyson-bladeless-fan.htm
I have added my sketch and a scale of the animals, as well as additional information about their behavior. I may have some terms wrong (Like hive-mind), so if I do, please .tell me so I can correct that.