MAREK MIS / SCIENCE PHOTO LIBRARY MAREK MIS / SCIENCE PHOTO LIBRARY
Aquatic snail. Darkfield illuminated polarised light micrograph of a freshwater snail. Aquatic snails are found worldwide in a wide range of freshwater habitats. Some have gills, and so are able to breathe under water, while others have lungs and need to surface to breathe. The majority feed on algae. Magnification: x100 when printed 10 centimetres wide.
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