Name: Marianne M.
How do Whirligig Beetles breath when they go under the water?
Whirligig beetles do not normally go all the way under water, they swim on the surface,
half in and half out, so they can breathe. See A Guide to Observing Insect Lives, by
Donald W. Stokes, or many other insect references. Some diving beetles, that do go
under water as adults, carry a bubble of air with them when they dive.
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Update: June 2012