| Crustacean (invertebrate animal) with a body compressed side to side; hard shell covers body but not head; uses second set of antennae to swim
Lakes, ponds, streams
Filters detritus, protozoans, rotifers, crustaceans, algae, diatoms and other plankton from the water
Ducks, shorebirds, diving beetles, other aquatic invertebrates, fish
Females produce two kinds of eggs: thin-shelled eggs in the summer, which develop without fertilization, and thick-shelled ones in winter, which are fertilized by males.
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