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In this lab activity, students will observe the minute animals that live between sand grains. The activity includes a list of materials, procedures, and discussion question. It is supplemented with reference images and a list of species and their phyla, including Gastrotrichicha, Crustacea/Ostracoda, Crustacea/Copepoda/Harpacticoidea, Nematoda, Turbellaria, Nemertina, Archiannelida, Polychaeta, and Oligochaeta.