MAREK MIS / SCIENCE PHOTO LIBRARY MAREK MIS / SCIENCE PHOTO LIBRARY
Philodina rotifer. Darkfield illuminated light micrograph of a Philodina sp. rotifer (blue) on sphagnum sp. moss. Rotifers are microscopic aquatic animals that are related to roundworms. Magnification: x200 when printed 10 centimetres wide.
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