Cladocera - Offers an illustrated body plan of a daphnia or water flea, with a numbered key, and details of the major features of its anatomy.
Daphnia magna - Exercise from Invertebrate Anatomy OnLine covering the systematics and external anatomy of this water flea.
The Water Flea - Information on this branchiopod which is used in environmental monitoring as well as palaeoecological investigations.
Water Flea Anatomy - A mouse-over image of Daphnia longispina that enables identification of its anatomical features, with close-up images of many of them.
Water fleas - Information and several fine photographs of these small crustaceans.
Waterflea Circus - Photograph gallery of about ten species of waterflea.
Wikipedia: Cladocera - Details of anatomy and taxonomy on this type of small crustacean.
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