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"Rotaria sp. rotifers are very common bdelloid rotifers (Greek bdella, \leech-like\), they can be found in many freshwater environments and in moist soil, where they inhabit the thin films of water that are formed around soil particles. This sample was taken from a moss on a roof, showing an individual feeding on bacteria and small detritus particles. The head carries a corona (crown) of cilia that draws a vortex of water into the mouth, which the rotifer sifts for food. The food itself is ground by the trophi (jaws), located just behind the mouth in the pharynx (throat). Microscopic contrast method : Differential interference contrast. Capturing device: DSLR Canon 5DMk2 with Microscope adaption. Captured field width : 190 micrometers."