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Specimen
086
Navicula is a genus of boat-shaped diatom algae. For Navicula spp., locomotion is realized via two or more pseudopods or stalks protruded out of the frustules. The adhesion can be produced due to the pull-off of one pseudopod or stalk from the substratum through extracellular polymeric substances. The diatom has a girdle of mucilage strands around the outside of the navicula's shell that can flow and thus act as a tank track. |