Under their wings is where backswimmers [Notonectidae family] store their air. They need it for the deep dives by which they escape many predators. But when they run out of air, they must be able to get back to the surface quickly.
They breathe ny carrying air bubbles
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What are backswimmers adaptations
Gangs of Pond Skaters eat backswimmers although I dont know if they attack live creatures or just dispose of corpses.
other insects and fish
Water boatmen are sometimes confused with backswimmers, which are generally larger bugs that swim upside down and deliver a painful bite. from the web
Yes, they breathe oxygen, but they have this air bubble like thing in their abdomen that allows them to stay under water for quite some time.
100 million years
it breathe through its stupidness
north America, the USA
yes they do fly. i just answered my own question. i am a geek.
Um i don't think. I know they bite humans like a mosquito though.