water fleas

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Definition of water fleas in English English dictionary: plural form of water flea; waterwheel plant; genus daphnia
water flea: Any of various aquatic crustacea characterised by their jumping or jerky mode of swimming; mostly species of Daphnia
water flea: Any of various small aquatic crustaceans of the order Cladocera, especially the daphnid, that typically swim with jerking flealike motions. Any of about 450 species (order Anomopoda) of microscopic, mostly freshwater crustaceans distributed worldwide. Species in the genus Daphnia are ubiquitous in Europe and North America. Water fleas have a discrete head that bears antennae. The carapace (shell) encloses all or most of the body, except on the predatory giant Leptodora (up to 0.7 in. [18 mm] long), whose carapace is just a small brood sac. Most species swim by powerful strokes of the antennae, sometimes producing a hopping-and-sinking motion. All but a few predatory species use specialized thoracic limbs to filter organic matter from the water. See also copepod
water flea: Any one of numerous species of small aquatic Entomostraca belonging to the genera Cyclops, Daphnia, etc; so called because they swim with sudden leaps, or starts

water fleas

Hyphenation

wa·ter fleas

wôtır fliz

/ˈwôtər ˈflēz/ /ˈwɔːtɜr ˈfliːz/

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