Specimen of Characiopsis spec, probably Ch. acuta. The microscope is focussed on the chloroplast. Digital drawing using 6 frames generating depth of focus, stacked manually using Corel Photopaint. 

 Aufwuchs on Oedogonium which itself was Aufwuchs on roots dangling in a creek. This image was taken using Zeiss Universal with Olympus C7070 CCD camera.