DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Flatworm on a leaf. Light micrograph of an unsegmented flatworm (Dugesia sp.) on the underside of a leaf from the European white water lily (Nymphaea alba). The worm has two simple eyes (white dots, lower right) at its anterior end and moves by beating cilia on the its outer epidermal surface.
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