Did you ever itch to catch a water flea? The name water flea is a nickname; it is also called a daphnia. These tiny critters are part of the freshwater plankton. A daphnia swims in a jerky motion, using branched antennae while eating algae, microscopic animals and organic debris. Watch its legs swirl food to its mouth. Its tiny size and transparent body helps it hide from hungry insects and fish.
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