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Wonderful Wacky Water Critters

Water Penny

The water penny adult is a land-loving beetle. The young or larva stage is usually considered more interesting. It looks like a living suction cup. The streamlined body allows it to live on rocks in very fast water, where it is protected from predators by the swift current. The slow moving larva munches on algae that grow on the rocks. A silvery sheen on its belly is caused by air trapped in a coat of fine hairs. This is where its gills are too. The water penny can only live in streams or rivers that are clean and have lots of oxygen. The presence of water pennies indicates that the stream or river has year-round, pollution-free water.

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