Cercopagis pengoi
This is an article about a cladoceran invader of the Baltic Sea.

Cladocera Website
This is a website providing information and useful contacts for Cladoceran researchers.

Water Fleas, and Cladocerans of the Thompson - Okanagan Region
Articles about these freshwater zooplankton by Gordon Green.

Daphnia-Parasite Gallery
Photographs of infected Daphnia, with information on how to find and dissect affected animals.

WaterFlea
Guide to the identification of the remains of the Cladocera from lake sediments, with images and descriptions of how to identify the various remains plus information on life cycle and ecology.

Daphnia Anatomy
Richard Fox's description of the anatomy of the water flea.