Backswimmer replenishing its air

Backswimmer replenishing its air

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Caption: Backswimmer (Notonecta glauca) replenishing its air supply at the surface of a pond. Backswimmers, as their name implies, swim with their backs downward, rowing themselves along with their long hind legs. Air for breathing is stored in two grooves on the ventral surface, making the insect buoyant and keeping it in its inverted position. To replenish its air reserve the insect returns to the surface and pushes the end of its abdomen up out of the water. The backswimmer is also adept at flying, but cannot take off from the swimming position. It must first crawl onto land, right itself and dry its wings before taking to the air.

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Keywords: animal, backswimmer, insect, insecta, invertebrate, invertebrates, nature, notonecta glauca, wildlife, zoology

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