Devoted to the study of polyclad flatworms (Phylum Platyhelminthes, Class Turbellaria, Order Polycladida), a group of large, free-living marine Platyhelminthes which are mainly found in tropical coral reefs.
An extensive and information-packed website about organisms dwelling in or on the sediment in lakes, by S.M. Mandaville of the Soil and Water Conservation Society of Metro Halifax.