Wonderful Wacky Water Critters
Guess where this small black beetle likes to live? That's right, in riffles, the part of a stream where the water flows quickly over a rocky bottom. You'll never find the riffle beetle in calm lakes or dirty rivers. It's part of the clean stream team. Amazingly, it cannot swim. Instead, it crawls through the rocks eating algae. A riffle beetle larva is small, black, hard and wormlike. The riffle beetle exchanges oxygen with the water across a thin layer of air attached to its hairy underside. What could you do to improve rivers for riffle beetles?
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